Question

The ratio between the speeds of trains if7:10if the second train runs400kms in4hours then the speed of first train is

Answer 1

Answer: 70 kmph

Step-by-step explanation:

The ratio between the speeds = 7:10

Second train speed= 400 kms in 4 hours= 400/4 (S=D/T) = 100 kmph

Ratio is 7:10

First train= x

Second train is 100 kmph i.e. 10

Sum of Ratio= 17

x=(17*10)-(10*10)

x=70

Therefore

The first train= 70 kmph or 280 in 4 hours

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