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: - Study24x7
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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 km/hr

B

75 km/hr

C

84 km/hr

D

87.5 km/hr

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