A can do a piece of work in 10 days and B in 15 days. If they work for a day alternately A beginning the work will be completed in
Correct answer B. 12 days
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ECAT Math MCQs
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A can complete a piece of work in 16 days and B can complete it in 20 days. They start working together. Two days before the completion of the work A leaves. Work is completed in
Correct answer A. 10 days
A is twice as good a workman as B and takes 6 less days to complete a piece of work as B does. To finish the work alone B will take
Correct answer A. 12
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A can do a piece of work in 28 days. If B is 40% more efficient than A B can do the same piece of work in
Correct answer A. 20 days
A can finish a work in 7 days B in 14 days and C in 28 days. B and C start working and are forced to leave the work after 2 days. The number of days taken by A to finish the remaining work is
Correct answer C. 5.5 days
A can finish a work in 20 days B can do the same work in 10 days. After A has worked for 5 days B joins A in how many days the remaining work will be finished.
Correct answer C. 5 days
A can do a work in 40 days and B can do it is 25 days. A worked at it for 8 days. In how many days B can finish the remaining work.
Correct answer B. 20 days
A can do a piece of work in 16 days while B can do it in 12 days. With the help of C they can finish it in 6 days. In how many days can C alone do the work?
Correct answer A. 48 days
12 women or 16 girls can do a certain job in 20 days. 14 women and 8 girls can do the same job in how many days?
Correct answer C. 12
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A can type 60 pages in 15 hours. A and B can type 150 pages in 25 hours. How long will it take B alone to type 120 pages?
Correct answer D. 60 hours
A and B together can fill a ditch in 30 days while A alone can fill it in 50 days. If B does the work for only half a day daily how long will it take to fill the ditch by A and B?
Correct answer C. 75/2 days
Working 8 hours a day a work is done in 10 days. For how many hours a day must the work be done in order to complete it in 8 days.
Correct answer B. 10 hours
Two pipes can fill an empty tank in 10 and 15 hrs respectively. If waste pipe C is opened both A and B together can fill the tank in 5 hours. The waste pipe can empty the full tank in
Correct answer A. 30 hrs
A tank that can be filled by an inlet pipe A in 12 hours is filled in 18 hours while out let pipe B is opened. The outlet pipe B can empty the full tank in
Correct answer B. 36 hrs
A tank which has a leak in the bottom is filled in 20 hours. Had there been no leak the tank would have been filled in 15 hours. The leak can empty the full tank in
Correct answer C. 60 hrs
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Pipe A can fill a tank in 10 hours and pipe B can empty it in 15 hours. In how many hours will the tank be filled if both the pipes are opened?
Correct answer D. 30
16 men can finish two fifth of the work in 4 days. The number of additional men required to finish the remaining work in 2 more days will be
Correct answer B. 0 men
A can finish a work in 24 days B can finish the same work in 36 days. If they work together and finish it then out of total wages of Rs. 500 A will get
Correct answer C. Rs. 300
A works thrice as fast as B. If B can complete a work in 18 days. Then number of days taken by A and B working together to complete this work is
Correct answer D. 4.5 days
A is thrice as good workman as B and together they finish a piece of work in 24 days. In how many days can A alone finish the work
Correct answer C. 32 days