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 Select the correct option:  A) 87.5 km/h  B) 66.5 km/h  C) 42.5 km/h  D) 32.5 km/h  E) 61.5 km/h
87.5 km/h   87.5 km/h
<result>A</result>
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