The ratio between the speeds of two trains is 7 : 8. If the second train runs 400 km in 4 hours, then the speed of the first train is:

Question

Accepted Answer

Let the speed of two trains be 7x and 8x km/hr. Then, 8x = ❨ 400 ❩

⟹ x =	❨	100	❩	= 12.5
		8

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