Question

A passenger train, running at a speed of 80
km/hr leaves a railway station 6 hours after
a goods train leaves and overtakes it in 4
hours. What is the speed of the goods train?
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Answer 1

total hour of journey by passenger train is 10 hours .

total distance travelled by passenger train =10*80=>800km

goods train have to overtake it in4 hours .

Let speed of goods train be S.

D=S*T

S=D/T

S=800/4=>S=200km/hr