Question

The ratio between the speed of two trains is 7:8 if the second train runs 400kms in 5 hours the speed of the the first train is

Answer 1

400÷5=80
7:8
70:80
70×5=350ans

Answer 2

let the speed of both the trains are 7x and 8x.

V2 = s2 / t2

= 400 / 5 = 80kmph

speed of second train = 80

8x = 80

x = 80 / 8 = 10

Speed of 1st train = 7x = 7 × 10

= 70kmph


Thanks