1.

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

A. 87.5 km/hr
B. 86.5 km/hr
C. 85.5 km/hr
D. 84.5 km/hr
Answer» B. 86.5 km/hr


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