on a 60km track a train travells the first 30km at a uniform speed of 30km/hr .how fast the train travelles the next 30km so that the avg speed s 40km/hr for the entire trip
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1/3 time it will take to complete his next 30 km
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Let the train must travel with a speed of x km .
Average speed = Total distance travelled\Total time taken
40 = 60/ x + 1
x + 1 = 1.5
c = 0.5 hr
Speed for the next 30 km = 30 /0.5 = 60 km/h
Average speed = Total distance travelled\Total time taken
40 = 60/ x + 1
x + 1 = 1.5
c = 0.5 hr
Speed for the next 30 km = 30 /0.5 = 60 km/h
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