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
(a) 10 Km/hr
(b) 50 Km/hr (c) 70 Km/hr
(d) none of the above
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Answer 1

Answer:

Step-by-step explanation:

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Answer 2

Answer:

(c) 70km/hr

Step-by-step explanation:

The ratio is 7:8

If the speed of second train is 400km in 5 hrs then it's speed will be 400/5=80km per hour.

Let the speed of first train be x km/hr

---> 7:8=x:80

x=(80x7)/8

x=70

Speed of first train=70km/hr