mathematics MCQs – Page 148

Practise multiple-choice questions from mathematics for competitive examinations and subject revision. Review each marked answer and report any item that may be outdated or unclear.

2941. What is the Sum of First 70 even Numbers?
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A. 4900

B. 4980

C. 4950

D. 4970
2942. P and Q need 8 days to complete a work. Q and R need 12 days to complete the same work. But P, Q and R together can finish it in 6 days. How many days will be needed if P and R together do it?
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A. 9

B. 8

C. 7

D. 10

2943. A and B can do a piece of work in 12 days; B and C in 15 days; C and A in 20 days. A alone can do the work in__________?
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A. 40 days

B. 20 days

C. 30 days

D. none of these

2944. 25% of 30% of 45% is equal to__________?
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A. 0.03375

B. 0.3375

C. 33.75

D. 3.375

2945. A and B can finish a work 30 days if they work together. They worked together for 20 days and then B left. A finished the remaining work in another 20 days. In how many days A alone can finish the work?
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A. 60

B. 40

C. 70

D. 50

2946. A alone can finish a work in X days. B alone can finish the same work in X+5 days. Together, they take 6 days to complete the work. Find X
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A. 10

B. 9

C. 12

D. 8

2947. How much is 80% of 40 is greater than 4/5 of 25?
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A. 6

B. 9

C. 12

D. 4

2948. P can finish a work in 18 days. Q can finish the same work in 15 days. Q worked for 10 days and left the job. how many days does P alone need to finish the remaining work?
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A. 2

B. 6

C. 4

D. 8

2949. Mansoor-Ul-Haque and Aaqib are working on a special assignment. Mansoor-Ul-Haque needs 6 hours to type 32 pages on a computer and Aaqib needs 5 hours to type 40 pages. If both of them work together on two different computers, how much time is needed to type an assignment of 110 pages?
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A. 8 hour 15 minutes

B. 7 hour 15 minutes

C. 8 hour 30 minutes

D. 7 hour 30 minutes

2950. 8 children and 12 men complete a certain piece of work in 9 days. If each child takes twice the time taken by a man to finish the work, in how many days will 12 men finish the same work ?
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A. 10 days

B. 8 days

C. 6 days

D. 12 days
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.
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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?
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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 ?
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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