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 these​

Answer 1

Answer:

(d)70 Km/Hr

Step-by-step explanation:

Speed = Distance/ Time  

2nd train:— speed = 400/5= 80 km/hr  

1st train speed = (80/8)*7 km/hr = 70 km/hr

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