Malay walks around a circular field at the rate of 7 rounds per hour,while Neha runs around it at the rate of 11 rounds per hour. They start in the same direction from the same point at 02:45 p.m. They shall first cross each other at:
Answer & explanation
Correct answer: option 1
The relative speed between Malay and Neha = 11 - 7 = 4 rounds/hour
(Because they are in the same direction )
Time taken to complete one round at this speed = \(\frac{1}{4}\) hour
= \(\frac{1}{4}\) × 60 minutes
= 15 minutes
So, First time they meet at = 2:45 + 15 min = 3:00 pm