Rohit and Dinesh are 64km apart. Rohit can walk at a speed of 15km/hr and Dinesh at the speed of 17km/hr. In how many hours will they meet if they are travelling towards each other?
- A2.5 hours
- B2 hours
- C3 hours
- D1.5 hours
Solution & Step-by-step Explanation
When two objects move towards each other, their relative speed is the sum of their individual speeds.
Calculate the relative speed:
Relative Speed=Speed of Rohit+Speed of Dinesh
Relative Speed=15km/hr+17km/hr=32km/hr
Calculate the time taken to meet:
The initial distance between them is 64km.
Time=
Relative Speed
Distance
Time=
32km/hr
64km
=2hours
Therefore, they will meet in 2hours.
Calculate the relative speed:
Relative Speed=Speed of Rohit+Speed of Dinesh
Relative Speed=15km/hr+17km/hr=32km/hr
Calculate the time taken to meet:
The initial distance between them is 64km.
Time=
Relative Speed
Distance
Time=
32km/hr
64km
=2hours
Therefore, they will meet in 2hours.