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Time, Distance and Speed

If C can complete a work in 30 days and D can complete it in 45 days, how much time will they take to finish the work together?

A. 18 DAYS
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A and B can complete a work in 20 days and 30 days respectively. If they work together for 10 days, how much of the work is left?

A. 1/3
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If a vehicle travels 240 km in 3 hours and 30 minutes, what is its average speed in km/h?

C. 70 KM/H
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A can do a work in 16 days and B can do it in 24 days. If they work together for 8 days, how much of the work is left?

C. 1/2
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A cyclist covers a distance of 120 kilometers in 4 hours. What is the speed of the cyclist in km/h?

B. 30 KM/H
Posted in:  Time, Distance and Speed -  Aptitude -  Mathematics