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:

Time and Distance

1)	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:

A) 70 kmph
B) 75 kmph
C) 84 kmph
D) 87.5 kmph

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