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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. How long will they take to complete the work together?

A. 6 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 kilometers?

B. 3 HOURS
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If a train travels at a speed of 90 km/h, how far will it travel in 3 hours?

C. 300 KM
Posted in:  Time, Distance and Speed -  Aptitude -  Mathematics

If A can do a piece of work in 12 days and B can do it in 18 days, how long will it take for both A and B to complete the work together?

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

A car and a bike start from the same point. The car travels at 80 km/h and the bike at 40 km/h. After 2 hours, how much farther has the car traveled than the bike?

B. 60 KM
Posted in:  Time, Distance and Speed -  Aptitude -  Mathematics