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Time, Distance and Speed

A and B can complete a work in 12 days and 15 days respectively. If they work together for 3 days, how much work is left?

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

If A can finish a piece of work in 20 days and B can finish it in 30 days, how long will it take for both A and B to finish the work together?

B. 15 DAYS
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A and B can do a piece of work in 12 days and 18 days respectively. If they work together for 6 days, how much work is left?

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

A cyclist covers a distance of 120 kilometers in 4 hours. If he increases his speed by 10 km/h, how long will it take him to cover the same distance?

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

A and B can complete a work in 20 days together. If A alone can complete the work in 30 days, how long will B take to complete the work alone?

A. 60 DAYS
Posted in:  Time & Work -  Aptitude -  Mathematics