Question

Rohit and Dinesh are 64 km apart. Rohit can walk at a speed of 15 km/hr and Dinesh at the speed of 17 km/hr. In how many hours will they meet if they are travelling towards each other?
1. 2.5 hours
2. 2 hours
3. 3 hours
4. 1.5 hours

Answer 1

Correct Answer - Option 2 : 2 hours

Given:

Distance between Rohit and Dinesh = 64 km

Rohit's speed = 15 km/h

Dinesh's speed = 17 km/h

Formulae Used:

Speed = Distance/Time

Relative speed of two bodies approaching each other = Sum of their individual speeds

Calculation:

When Rohit and Dinesh are travelling towards each other,

Their relative speed = 15 + 17 = 32 km/h

Time taken by them to meet each other = 64/32 = 2 hours

∴ The time taken for Rohit and Dinesh to meet each other = 2 hours