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average Mcqs

1. Visitors to show were charged Rs.15 each on the first day. Rs.7.50 on the second day, Rs.2.50 on the third day and total attendance on the three days were in ratio 2:5:13 respectively. The average charge per person for the whole show is___________?
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A. Rs.5.00

B. Rs.4.50

C. Rs.7.50

D. Rs.3

2. The average age of a husband and a wife is 23 years when they were married five years ago but now the average age of the husband, wife and child is 20 years(the child was born during the interval). What is the present age of the child?
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A. 3 years

B. 1 year

C. 4 years

D. 2 years

3. A total of 3000 chocolates were distributed among 120 boys and girls such that each boy received 2 chocolates and each girl received 3 chocolates. Find the respective number of boys and girls?
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A. 50, 70

B. 40, 80

C. 60, 60

D. 70, 50

4. A batsman makes a score of 64 runs in the 16th innings and thus increased his average by 3. Find his average after the 16th inning?
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A. 17

B. 29

C. 18

D. 19

5. Find the average of the first 20 natural numbers?
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A. 12

B. 10.5

C. 11.5

D. 10

6. If the arithmetic mean of seventy five numbers is calculated, it is 35. If each number is increased by 5, then mean of new number is___________?
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A. 30

B. 70

C. 40

D. 90

7. In the first 10 overs of a cricket game, the run rate was only 3.2. What should be the rate in the remaining 40 overs to reach the target of 282 runs?
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A. 7

B. 6.25

C. 6.5

D. 6.75

8. A library has an average of 510 visitors on Sunday and 240 on other days. The average number of visitors per day in a month of 30 days beginning with a Sunday is___________?
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A. 285

B. 276

C. 250

D. 280

9. The average marks in mathematics scored by the students of a school at the public examination were 39. If four of these students who actually scored 5, 12, 15 and 19 marks at the examination had not been sent up, the average marks for the school would have been 44. Find the number of students sent up for examination from the school?
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A. 30

B. 32

C. 20

D. 25

10. Rs. 6000 is lent out in two parts. One part is lent at 7% p.a simple interest and the other is lent at 10% p.a simple interest. The total interest at the end of one year was Rs. 450. Find the ratio of the amounts lent at the lower rate and higher rate of interest?
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A. 5 : 1

B. 4:01

C. 2:01

D. 3:02

11. The average weight of a group of boys is 30 kg. After a boy of weight 35 kg joins the group, the average weight of the group goes up by 1 kg. Find the number of boys in the group originally?
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A. 5

B. 4

C. 7

D. 6

12. The sum of five numbers is 655. The average of the first two numbers is 85 and the third number is 125. Find the average of the two numbers?
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A. 170

B. 175

C. 180

D. 190

13. A family consists of grandparents, parents and three grandchildren. The average age of the grandparents is 67 years, that of the parents is 35 years and that of the grandchildren is 6 years. What is the average age of the family?
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A. 28 4/7 years

B. 31 5/7 years

C. None of these

D. 32 1/7 years

14. The average marks of a class of 30 students is 40 and that of another class of 50 students is 60. Find the average marks of all the students?
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A. 59

B. 47.5

C. 50

D. 52.5

15. The average salary per head of the entire staff of an office including the officers and clerks is Rs.90. The average salary of officers is Rs.600 and that of the clerks is Rs.84. If the number of officers is 2, find the number of officers in the office?
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A. 1540

B. 1020

C. 960

D. 840

16. The average of first ten prime numbers which are odd is____________?
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A. 17

B. 13.8

C. 15.8

D. 12.9

17. The average height of 50 pupils in a class is 150 cm. Five of them whose height is 146 cm, leave the class and five others whose average height is 156 cm, join. The new average height of the pupils of the class (in cm) is __________ .
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A. 153

B. 151

C. 149

D. 152

18. The average age of a husband, wife and their child 3 years ago was 27 years and that of wife and the child 5 years ago was 20 years. The present age of the husband is___________?
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A. 40 years

B. 30 years

C. 35 years

D. None of these

19. If the average marks of three batches of 55, 60 and 45 students respectively is 50, 55, 60, then the average marks of all the students is__________?
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A. 54.68

B. 55

C. 53.33

D. None of these

20. The total marks obtained by a student in Mathematics and Physics is 60 and his score in Chemistry is 20 marks more than that in Physics. Find the average marks scored in Mathematics and Chemistry together.
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A. 25

B. Data inadequate

C. 30

D. 40

21. The average of first 10 odd numbers is_____________?
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A. 17

B. 10

C. 12

D. 11

22. The average of two numbers is XY.If one number is equal to X ,the other number is equal to_________?
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A. X

B. 2 XY -2 X

C. 2Y

D. XY-X

23. The average of runs of a cricket player of 10 innings was 32. How many runs must he make in his next innings so as to increase his average of runs by 4?
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A. 70

B. 2

C. 76

D. 4

24. The average of the two-digit numbers, which remain the same when the digits interchange their positions, is__________?
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A. 66

B. 55

C. 33

D. 44

25. In a hostel there were 100 students. To accommodate 20 more students the average is decreased by rupees 5. But total expenditure increased by Rs.400. Find the total expenditure of the hostel now?
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A. Rs.5400

B. Rs.4600

C. Rs.5000

D. Rs.2300

26. The total marks obtained by a student in Physics, Chemistry and Mathematics is 150 more than the marks obtained by him in Physics. What is the average mark obtained by him in Chemistry and Mathematics?
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A. 50

B. 75

C. 150

D. None of these

27. The average of 35 numbers is 25. If each number is multiplied by 5, find the new average?
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A. 98

B. 125

C. 134

D. 170

28. The average age of 8 men increases by 2 years when two women are included in place of two men of ages 20 and 24 years. Find the average age of the women?
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A. 18 years

B. 24 years

C. 30 years

D. 36 years

29. The temperature at noon in LHR ,Pakistan was 6 deg on Monday ,4deg on Tuesday,2deg below zero on Wednesday,3deg below zero on Thursday, 0 deg on Friday ,3 deg on Saturday ,and 6 deg on Sunday. What was the average temperature at noon for the week ?
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A. 7 deg

B. -2 deg

C. 14 deg

D. 2 deg

30. The average of five consecutive odd numbers is 61. What is the difference between the highest and lowest numbers?
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A. 8

B. 5

C. 2

D. Cannot be determined

31. The average of first five multiples of 3 is____________?
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A. 9

B. 12

C. 15

D. 3

32. The average of five results is 46 and that of the first four is 45. The fifth result is__________?
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A. 50

B. 12.5

C. 10

D. 1

33. A cricketer has a certain average for 10 innings. In the eleventh inning, he scored 108 runs, there by increasing his average by 6 runs. His new average is_____________?
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A. 52 runs

B. 60 runs

C. 55 runs

D. 48 runs

34. A person travels from x to y at a speed of 40Km/h and returns by increasing his speed 50%. What is his average speed for both the trips?
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A. 50km/h

B. 36km/h

C. 45km/h

D. 48km/h

35. The arithmetic mean of the scores of a group of students in a test was 52. The brightest 20% of them secured a mean score of 80 and the dullest 25% a mean score of 31. The mean score of remaining 55% is___________?
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A. 51.4 approx.

B. 54.6 approx.

C. 45

D. 50

36. A student scored an average of 80 marks in 3 subjects: Physics, Chemistry and Mathematics. If the average marks in Physics and Mathematics is 90 and that in Physics and Chemistry is 70, what are the marks in Physics?
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A. 72

B. 64

C. 60

D. 80

37. Sarfaraz obtained 76, 65, 82, 67 and 85 marks (out of 100) in English, Mathematics, Physics, Chemistry and Biology. What are his average marks?
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A. None of these

B. 69

C. 65

D. 72

38. The average of five numbers is 27. If one number is excluded, the average becomes 25. The excluded number is__________?
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A. 25

B. 30

C. 27

D. 35

39. Three years ago the average age of a family of six members was 19 years. A boy have been born, the average age of the family is the same today. What is the age of the boy?
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A. 1.5 years

B. 1 year

C. 2 years

D. 2.5 years

40. Nine men went to a hotel. Eight of them spent Rs.3 each over their meals and the ninth spent Rs.2 more than the average expenditure of all the nine. Determine the total money spent by them?
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A. Rs.29.25

B. Rs.30.25

C. Rs.32

D. Rs.35

41. The average age of 15 students of a class is 15 years. Out of these, the average age of 5 students is 14 years and that of the other 9 students is 16 years. The age of the 15th student is____________?
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A. 15 years

B. 15 2/7 years

C. 11 years

D. 14 years

42. The average weight of A, B and C is 45 kg. If the average weight of A and B be 40 kg and that of B and C be 43 kg, then the weight of B is___________?
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A. 17 kg

B. 31 kg

C. 26 kg

D. 20 kg

43. The average temperature for Monday, Tuesday, Wednesday and Thursday was 48 degrees and for Tuesday, Wednesday, Thursday and Friday was 46 degrees. If the temperature on Monday was 42 degrees. Find the temperature on Friday?
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A. 40 degrees

B. 36 degrees

C. 34 degrees

D. 38 degrees

44. The average of first 10 natural numbers is____________?
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A. 5.5

B. 6

C. 6.5

D. 5

45. The average of the marks of 12 students in a class is 36. If the marks of each student are doubled, find the new average?
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A. 72

B. 79

C. 37

D. 45

46. A trader purchased two colour televisions for a total of Rs. 35000. He sold one colour television at 30% profit and the other 40% profit. Find the difference in the cost prices of the two televisions if he made an overall profit of 32%?
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A. Rs. 19000

B. Rs. 21000

C. Rs. 24500

D. Rs. 17500

47. The average salary of workers in an industry is Rs.200 the average salary of technicians being Rs.400 and that of non-technicians being Rs.125. What is the total number of workers?
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A. 550

B. 275

C. 250

D. 400

48. The mean of 50 observations was 36. It was found later that an observation 48 was wrongly taken as 23. The corrected new mean is___________?
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A. 35.2

B. 36.1

C. 39.1

D. 36.5

49. The average salary of all the workers in a workshop is Rs. 8000. The average salary of 7 technicians is Rs. 12000 and the average salary of the rest is Rs. 6000. The total number of workers in the workshop is__________________?
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A. 21

B. 20

C. 23

D. 22

50. The average weight of a group of persons increased from 48 kg to 51 kg, when two persons weighing 78 kg and 93 kg join the group. Find the initial number of members in the group?
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A. 21

B. 23

C. 24

D. 22

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