mathematics mcqs to prepare for nts, kppsc, fpsc, ppsc and more | mcqpk.com

mathematics Mcqs

2951. Twelve men can do a work in twenty days while twenty women can finish the same work in sixteen days. Find the ratio between the capacity of a man and a woman.
0

A. 4:3

B. 5:04

C. 5:03

D. 3:04

2952. P is able to do a piece of work in 15 days and Q can do the same work in 20 days. If they can work together for 4 days, what is the fraction of work left?
0

A. 8/15

B. 11-Feb

C. 15-Nov

D. 15-Jul

2953. Farjan and Kashif can complete a task in 30 days. Farjan leaves after 20 days and Kashif alone completes it in another 25 days. How many days does Farjan alone take to complete the entire task?
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A. 50

B. 45

C. 60

D. 75

2954. Assume that 20 cows and 40 goats can be kept for 10 days for Rs.460. If the cost of keeping 5 goats is the same as the cost of keeping 1 cow, what will be the cost for keeping 50 cows and 30 goats for 12 days?
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A. Rs.1000

B. Rs.934

C. Rs.1104

D. Rs.1210

2955. 15 men can build a 500m long wall in 30 days. In how many days can 30 men build a 1.2 km long wall?
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A. 24 days

B. 36 days

C. 48 days

D. 40 days

2956. C takes 6 days to complete half of a work and D takes 5 days to complete 1/3rd of the same work. They take turns to complete the task. If C works for the first 4 days, in how many days will D complete the rest of the work without the help of C?
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A. 9 days

B. 8 days

C. 10 days

D. 12 days

2957. A tank can be filled by a pipe in 20 min. and by another pipe in 60 min. Both the pipes are kept open for 10 min. and then the first pipe is shut off. After this, the tank will be completely filled in__________?
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A. 10 min

B. 30 min

C. 40 min

D. 20 min

2958. A is thrice as good as B in work. A is able to finish a job in 60 days less than B. They can finish the work in___________days if they work together.
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A. 18 days

B. 26 days

C. 24 days

D. 22 days

2959. Twenty women can do a work in sixteen days. Sixteen men can complete the same work in fifteen days. What is the ratio between the capacity of a man and a woman ?
0

A. Data inadequate

B. 3:04

C. 5:03

D. 4 : 3

2960. 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. None of these

C. 55

D. 53.33

2961. The average height of 35 boys in a class was calculated as 180cm. It has later found that the height of one of the boys in the class was wrongly written as 166 cm whereas his actual height was 106 cm. Find the actual average height of the boys in the class (Round off your answer to two decimal places)?
0

A. 179.38 cm

B. 179.29 cm

C. 178.29 cm

D. 178.39 cm

2962. A man can row 30 km downstream and 20 km upstream in 4 hours. He can row 45 km downstream and 40 km upstream in 7 hours. Find the speed of man in still water?
0

A. 12 kmph

B. None of these

C. 10 kmph

D. 12.5 kmph

E. 15 kmph

2963. The average amount with a group of seven numbers is Rs. 20. If the newly joined member has Rs. 50 with him, what was the average amount with the group before his joining the group?
0

A. Rs. 22

B. Rs. 15

C. Rs. 18

D. Rs. 25

2964. A,B,C, can do a work in 8,14,16 days respectively. A does the work for the first 2 days. B continues from it and finishes 2/3rd of the remaining work. C finishes the remaining work. How many days would have taken to complete the work?
0

A. 11

B. 15

C. 13

D. 12

2965. 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?
0

A. 6.5

B. 6.75

C. 6.25

D. 7

2966. A building contractor employs 20 male, 15 female and 5 child workers. To a male worker he pays Rs.25 per day, to a female worker Rs.20 per day and a child worker Rs.8 per day. The average wage per day paid by the contractor is__________?
0

A. Rs.23

B. Rs.21

C. Rs.22

D. Rs.20

2967. The average of first ten prime numbers which are odd is____________?
0

A. 13.8

B. 12.9

C. 17

D. 15.8

2968. If a man rows at the rate of 5 kmph in still water and his rate against the current is 3.5 kmph. then the mans rate along the current is__________?
0

A. 8.5 kmph

B. 4.25 kmph

C. 6.5 kmph

D. 6 kmph

2969. 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. 26 kg

B. 31 kg

C. 17 kg

D. 20 kg

2970. A, B and C can do a piece of work in 20, 30 and 60 days respectively. In how many days can A do the work if he is assisted by B and C on every Third day ?
0

A. 15 days

B. 12 days

C. 16 days

D. 18 days

2971. 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?
0

A. None of these

B. 32 1/7 years

C. 28 4/7 years

D. 31 5/7 years

2972. A cistern has two taps which fill it in 12 min. and 15 min.respectively There is one outlet pipe in the cistern. When all the taps & pipe are opened, the empty cistern is full in 20 min. How long will the waste pipe (outlet) take to empty the full cistern ?
0

A. 10 min

B. 40 min

C. 30 min

D. 20 min

2973. 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. 59.1

B. 57.4

C. 57.5

D. 58.9

2974. 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. 2:3

C. 3:04

D. 3:05

2975. A salt manufacturing company produced a total of 5000 tonnes of salt in January of a particular year. Starting from February its production increased by 100 tonnes every month over the previous months until the end of the year. Find its average monthly production for that year?
0

A. 7070

B. 5550

C. 4440

D. 6060

2976. A and B can do a work in 8 days, 13, and C can do the same work in 12 days. A, B and C together can finish it in 6 days. A and C together will do it in_________?
0

A. 6 days

B. 12 days

C. 8 days

D. 4 days

2977. A man can swim in still water at 4.5 km/h, but takes twice as long to swim upstream than downstream. The speed of the stream is_________?
0

A. 7.5

B. 2.25

C. 1.5

D. 3

2978. A can do a certain work-in the same time in which B and C together can do it. If A and B together could do it in 10 days and C alone in 50 days, then B alone could do it in_________?
0

A. 25 days

B. 20 days

C. 30 days

D. 15 days

2979. 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

2980. 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___________?
0

A. 35.2

B. 36.1

C. 36.5

D. 39.1

2981. To fill a cistern, pipes P, Q & R take 20, 15 & 12 minutes respectively. The time in minutes that the three pipes together will take to fill the cistern is:__________?
0

A. 15 min

B. 5 min

C. 20 min

D. 10 min

2982. The average of first five prime numbers greater than 20 is____________?
0

A. 32

B. 31

C. 32.2

D. 31.01

2983. 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. 14 years

B. 16 years

C. 18 years

D. 20 years

2984. The current of a stream at 1 kmph. A motor boat goes 35 km upstream and back to the starting point in 12 hours. The speed of the motor boat in still water is_________?
0

A. 8.5 kmph

B. 6 kmph

C. 7 kmph

D. 8 kmph

2985. The average of 20 numbers is zero. Of them, at the most, how many may be greater than zero?
0

A. 0

B. 1

C. 19

D. 10

2986. The current of a stream runs at the rate of 4 kmph. A boat goes 6 km and back to the starting point in 2 hours, then find the speed of the boat in still water?
0

A. 21 kmph

B. 12 kmph

C. 10 kmph

D. 8 kmph

2987. The average of 1st 3 of 4 numbers is 16 and of the last 3 are 15. If the sum of the first and the last number is 13. What is the last numbers?
0

A. 6

B. 2

C. 8

D. 5

2988. X and Y can do a piece of work in 20 days and 12 days respectively. X started the work alone and then after 4 days Y joined him till the completion of the work. How long did the work last ?
0

A. 15 days

B. 20 days

C. 6 days

D. 10 days

2989. The speed of a boat in still water is 60kmph and the speed of the current is 20kmph. Find the speed downstream and upstream?
0

A. 50, 55 kmph

B. 40, 60 kmph

C. 80, 40 kmph

D. 35, 25 kmph

2990. The average of first five multiples of 3 is____________?
0

A. 15

B. 3

C. 12

D. 9

2991. A can do piece of work in 30 days while B can do it in 40 days. In how many days can A and B working together do it ?
0

A. 45 days

B. 50 days

C. 70 days

D. 120/7 days

2992. The average of 10 numbers is 23. If each number is increased by 4, what will the new average?
0

A. 25

B. 27

C. 29

D. 22

2993. The average of 11 results is 50, if the average of first six results is 49 and that of the last six is 52. Find the sixth result?
0

A. 34

B. 56

C. 46

D. 57

2994. A boat can move upstream at 25 kmph and downstream at 35 kmph, then the speed of the current is_________?
0

A. 15 kmph

B. 30 kmph

C. 5 kmph

D. 10 kmph

2995. The average age of three boys is 15 years and their ages are in proportion 3:5:7. What is the age in years of the youngest boy?
0

A. 21

B. 15

C. 18

D. 9

2996. A man can row 6 kmph in still water. When the river is running at 1.2 kmph, it takes him 1 hour to row to a place and black. What is the total distance traveled by the man?
0

A. 5.76 km

B. 5.66 km

C. 6.24 km

D. 6 km

2997. The speed of a boat in upstream is 60 kmph and the speed of the boat downstream is 80 kmph. Find the speed of the boat in still water and the speed of the stream?
0

A. 50, 60 kmph

B. 35, 27 kmph

C. 45, 55 kmph

D. 70, 10 kmph

2998. A work can be finished in 16 days by twenty women. The same work can be finished in fifteen days by sixteen men. The ratio between the capacity of a man and a woman is_________?
0

A. 4:3

B. 2:03

C. 2:01

D. 1:03

2999. A man can row 6 kmph in still water. When the river is running at 1.2 kmph, it takes him 1 hour to row to a place and black. How far is the place?
0

A. 2.88 km

B. 2 km

C. 3 km

D. 3.12 km

3000. A batsman in his 17th innings makes a score of 85 and their by increasing his average by 3. What is his average after the 17th innings?
0

A. 37

B. 34

C. 36

D. 35

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