The ratio between the speeds of two trains is 3 : 5. If the second train runs 500 kms in 4 hours, then the speed of the first train is  Choose the correct choice from the following answers
A) 80 km/h
B) 75 km/h
C) 50 km/h
D) 125 km/h
E) 60 km/h
75 km/h   75 km/h
<result>B</result>
The ratio between the speeds of two trains is 3 : 5. If the second train runs 500 kms in 4 hours, then the speed of the first train is