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If Pawan can complete a piece of work in 6 days (P = 1/6) Mantu can complete the same work in 2 days (M = 1/2) Then working together, they can finish (2/3) of the work in one day (P + M = 2/3) Using the formula {time × rate of work = work done} we find that they will complete the entire work in (3/2)days or 1½ days when working together
A train 200 metre long takes 20 sec to cross a man running at a speed of 4 km/hr in the direction same to that of train. What is the speed of the train?
A train 500 m long running at 90 km/hr takes 40 seconds to cross a bridge. The length of the bridge is
A train 600 metres long is running at a speed of 54 km/hr. If it crosses a tunnel in 1 minute, then the length of the tunnel (in meters) is: