Question
With an average speed of 40 km/ hr, a train reaches its destination in time. If it goes with an average speed of 35 km/hr, it is late by 15 minutes. The total journey is
Answer: Option A
Answer: (a)Let the length of journey be x km, then$x/35 - x/40 = 15/60 = 1/4$${8x - 7x}/280 = 1/4$$x = 280/4 = 70$ km
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Answer: (a)Let the length of journey be x km, then$x/35 - x/40 = 15/60 = 1/4$${8x - 7x}/280 = 1/4$$x = 280/4 = 70$ km
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