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Time, Distance and Speed

A can do a work in 15 days, B can do it in 20 days, and C can do it in 30 days. If they work together, how long will it take to complete the work?

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

If 3 men can complete a work in 15 days, how many days will it take for 5 men to complete the same work?

A. 9 DAYS
Posted in:  Time & Work -  Aptitude -  Mathematics

If a train travels at a speed of 90 km/h, how long will it take to cover a distance of 270 km?

B. 3 HOURS
Posted in:  Time, Distance and Speed -  Aptitude -  Mathematics

A can do a piece of work in 20 days, B can do it in 30 days. If they work together for 10 days, how much of the work is left?

A. 1/3
Posted in:  Time & Work -  Aptitude -  Mathematics

If a train travels at a speed of 90 km/h, how far will it travel in 2.5 hours?

B. 225 KM
Posted in:  Time, Distance and Speed -  Aptitude -  Mathematics