Book Maths Puzzle Numerical Ability Time Distance and Speed

a train 50m long crosses a platform 100m in 10 seconds find the speed of the train ?

Read Solution (Total 1)

54 km/hr

Speed=Distance/Time=(50+100)/10=15 m/s =15x(18/5) km/hr= 54 km/hr
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Book Other Question

Mary brisk walks at a speed of 9km/h along a small road. The road is parallel to light rail transit track. She realises a train passes her from behind every 8 minutes. An oncoming train also passes her every 5 minutes. Assume the trains travel at a constant speed and leave their terminals at fixed intervals. What is the speed of the trains? 46,39,45,61,127 ?