basic maths MCQs – Page 4

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

basic maths Mcqs

61. 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?
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A. 8/15

B. 11-Feb

C. 15-Nov

D. 15-Jul

62. 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

63. 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

64. 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

65. 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

66. 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

67. 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

68. 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 ?
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A. Data inadequate

B. 3:04

C. 5:03

D. 4 : 3

69. 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

70. 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)?
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A. 179.38 cm

B. 179.29 cm

C. 178.29 cm

D. 178.39 cm

71. 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?
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A. 12 kmph

B. None of these

C. 10 kmph

D. 12.5 kmph

E. 15 kmph

72. 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?
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A. Rs. 22

B. Rs. 15

C. Rs. 18

D. Rs. 25

73. 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?
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A. 11

B. 15

C. 13

D. 12

74. 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. 6.5

B. 6.75

C. 6.25

D. 7

75. 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__________?
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A. Rs.23

B. Rs.21

C. Rs.22

D. Rs.20

76. The average of first ten prime numbers which are odd is____________?
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A. 13.8

B. 12.9

C. 17

D. 15.8

77. 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__________?
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A. 8.5 kmph

B. 4.25 kmph

C. 6.5 kmph

D. 6 kmph

78. 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. 26 kg

B. 31 kg

C. 17 kg

D. 20 kg

79. 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 ?
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A. 15 days

B. 12 days

C. 16 days

D. 18 days

80. 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. None of these

B. 32 1/7 years

C. 28 4/7 years

D. 31 5/7 years

Showing 61 to 80 of 238 mcqs