Correct Answer - Option 1 : 2.08 hr
Given:
The speed of A and B are in the ratio 1/4 ∶ 1/5 and A takes 25 minutes less than B to cover the certain distance.
Concept used:
Speed = Distance/Time
Calculation:
Let the ratio be x and the distance be D
And the speed of A and B are in the ratio 1/4 ∶ 1/5 = 5 ∶ 4
∴ The speed of A is 5x and the speed of B is 4x
Let A takes t1 time to cover the distance and B takes t2 time to cover the distance
Time taken by A = t1 = D/5x
And Time taken by B = t2 = D/4x
Now, B takes 25 min more than Ram
∴ t2 – t1 = D/4x - D/5x = 25/60 = 25/3x
Now, Time taken by B = 25x/3/4x = 2.08 hours
∴ B will take 2.08 hours to cover the same distance
