Question

The ratio between the speeds of two trains is 4 : 5. If the first train runs 200 km in 2 hours
then the speed of the second train is:
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Answer 1

125km/hr

let the constant be x

speed=distance/time

speed of first train=200/2

4x = 100 km/hr

x= 100/4=25

speed of second train=5x=5*25= 125 km/hr