# Train A takes 1 hour more than train B to travel a distance of 720 km.

| Train A takes 1 hour more than train B to travel a distance of 720 km. Due to engine trouble speed of train B falls by one-third, so it takes 3 hours more than Train A to complete the same journey? What is the speed of Train A (in km/hr)?

A. 80

B. 90

C. 60

D. 70

### Right Answer is: A

#### SOLUTION

Let the speed of train A be A km/h

And the speed of train B be B km/h

A.T.Q.

After Solving (i) & (ii), we get

B = 90 km/h

And

A = 80 km/h.

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Train A takes 1 hour more than train B to travel a distance of 720 km.