Question

25. The ratio between the speeds of two trains is 7: 8. If the second train runs 400 kms. in 5
hours, the speed of the first train is
1
(a) 10 Km/hr
(b) 50 Km/hr (c) 70 Km/hr (d) none of these​

Answer 1

Step-by-step explanation:

So, the speed of the second train is 8 × 12.5 = 100 kmph. And the speed of the second train is 7 × 12.5 = 87.5 kmph.

Answer 2

Answer:

Step-by-step explanation:

Let consider the ratio 7x:8x

Second train covers 400 km in 5 hrs

Then in 1 hr=400/5=80km

8x=80

Then X=80/8=10

7x= 10×7=70

Speed of first train is 70km /hr