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Time & Work
Time, Distance and Speed

A can do a work in 8 days, B can do it in 12 days, and C can do it in 24 days. If they all work together, how long will it take to complete the work?

B. 6 DAYS
Posted in:  Time & Work -  Aptitude -  Mathematics

C can finish a work in 20 days, while D can finish it in 30 days. If they work together for 10 days, how much of the work is left?

A. 1/3
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If a pipe can fill a tank in 6 hours and another pipe can empty it in 8 hours, how long will it take to fill the tank if both pipes are opened together?

B. 12 HOURS
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If A can do a work in 30 days and B can do the same work in 45 days, how long will they take to finish the work together?

B. 20 DAYS
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If A can do a piece of work in 12 days and B can do it in 18 days, how much time will they take to complete the work together?

A. 7.2 DAYS
Posted in:  Time & Work -  Aptitude -  Mathematics