arithmetic MCQs – Page 3

Practise focused arithmetic questions with marked answers for exam preparation and subject revision.

arithmetic Mcqs

41. The mean marks of 30 students in a class is 58.5. Later on it was found that 75 was wrongly recorded as 57. Find the correct them.
0

A. 58.9

B. 57.4

C. 59.1

D. 57.5

42. 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?
0

A. 2.5 years

B. 2 years

C. 1.5 years

D. 1 year

43. A pupils marks were wrongly entered as 83 instead of 63. Due to the average marks for the class got increased by half. The number of pupils in the class is___________?
0

A. 10

B. 73

C. 20

D. 40

44. 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?
0

A. Rs.32

B. Rs.29.25

C. Rs.30.25

D. Rs.35

45. A man purchased 3 blankets @ Rs.100 each, 5 blankets @ Rs.150 each and two blankets at a certain rate which is now slipped off from his memory. But he remembers that the average price of the blankets was Rs.150. Find the unknown rate of two blankets?
0

A. Rs.250

B. None

C. Rs.150

D. Rs.225

46. The present average age of a family of five members is 26 years. If the present age of the youngest member in the family is ten years, then what was the average age of the family at the time of the birth of the youngest member ? (Assume no death occurred in the family since the birth of the youngest).
0

A. 16 years

B. 18 years

C. 20 years

D. 14 years

47. 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__________________?
0

A. 20

B. 21

C. 23

D. 22

48. 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?
0

A. 30

B. 32

C. 20

D. 25

49. The average of 18 observations was calculated and it was 124. Later on it was discovered that two observations 46 and 82 were incorrect. The correct values are 64 and 28. The correct average of 18 observations is___________?
0

A. 123

B. 137

C. 122

D. 121

50. 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___________?
0

A. 31 kg

B. 26 kg

C. 20 kg

D. 17 kg

51. The average of 35 students in a class is 16 years. The average age of 21 students is 14. What is the average age of remaining 14 students?
0

A. 19 years

B. 18 years

C. 15 years

D. 17 years

52. 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%?
0

A. Rs. 19000

B. Rs. 21000

C. Rs. 17500

D. Rs. 24500

53. The average age of students of a class is 15.8 years. The average age of boys in the class is 16.4 years and that of the girls is 15.4 years. The ration of the number of boys to the number of girls in the class is___________?
0

A. 1:02

B. 3:05

C. 3:04

D. 2:3

54. In an exam, Amir scored 64 percent, Masood scored 36 percent and asif 44 percent. The maximum score awarded in the exam is 800. Find the average mark scored by all the three boys?
0

A. 404

B. 364

C. 384

D. 324

55. In an examination a pupils average marks were 63 per paper. If he had obtained 20 more marks for his Geography paper and 2 more marks for his History paper, his average per paper would have been 65. How many papers were there in the examination?
0

A. 10

B. 9

C. 8

D. 11

56. The average age 9 members of a committee are the same as it was 2 years ago, because an old number has been replaced by a younger number. Find how much younger is the new member than the old number?
0

A. 27 years

B. 7 years

C. 18 years

D. 11 years

57. Find the average of the first 20 natural numbers?
0

A. 10.5

B. 11.5

C. 10

D. 12

58. 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?
0

A. 22

B. 24

C. 21

D. 23

59. Find the average of the series : 312, 162, 132, 142 and 122?
0

A. 194

B. 186

C. 162

D. 174

60. The average weight of 16 boys in a class is 50.25 kg and that of the remaining 8 boys is 45.15 kg. Find the average weights of all the boys in the class.
0

A. 47.55 kg

B. 49.25 kg

C. 48.55 kg

D. 48 kg

Showing 41 to 60 of 102 mcqs