Mathematics | Maths Mcqs – 18

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Officerswiki is a free education & learning platform for all students and working professionals, where they can practice multiple-choice questions & answers (MCQs). These all MCQs on Officerswiki are FreeMcqs which are helpful in all types of exams such as PPSC, FPSC, CSS, NTS,  PMS, and UPSC. 

A and B working separately can do a piece of work in 9 and 12 days respectively. If they work for a day alternately. If A begins first, in how many days the work will be completed ?

A. 42/4 days
B. 41/4 days
C. 55 days
D. None of these

4 men and 2 woman can complete a work in 2 days. If 2 men alone take 5 days to complete the work, find the time taken by 2 women alone to complete the work.

A. 15 days
B. 10 days
C. 8 days
D. 20 days

B can work 3 times faster than A. They work together on a task and complete it in a day. How long does it take for B alone to complete the task?

A. 32 hours
B. 48 hours
C. 3 days
D. 4 days

A and B together take 6 days to complete a task. B and C together take 12 days to complete the same task. A and C together take 8 days to complete it. If A, B and C are working together, how long does it take for them to complete the task?

A. 4(2/3) days
B. 4 days
C. 5(1/3) days
D. 1(1/3) days

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 ?

A. 12 days
B. 15 days
C. 16 days
D. 18 days

A and B together can complete a work in 1.2 days,. A alone can complete it in 20 days. If B does the work only for half a day daily, then in how many days A and B together will complete the work ?

A. 10 days
B. 11 days
C. 15 days
D. 20 days

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 ?

A. 6 days
B. 10 days
C. 15 days
D. 20 days

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 ?

A. 3 : 4
B. 4 : 3
C. 5 : 3
D. Data inadequate

A and B can do a piece of work in 72 days; B and C can do it in 120 days; A and C can do it in 90 days. In what time can A alone do it ?

A. 80 days
B. 100 days
C. 120 days
D. 150 days

A and B can complete a work in 15 days and 10 days respectively. They started doing the work together but after 2 days B had to leave and A alone completed the remaining work. The whole work was completed in___________?

A. 8 days
B. 10 days
C. 12 days
D. 15 days

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