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:
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. 03:00 p.m.
Concept used:
Relative speed when moving in same direction = A - B
A and B are the speed of two vehicles
Calculations:
Relative speed = 11 - 7 = 4 rounds/h
Time taken = 1/4 h or 15 mins
Hence, the required time = 2 : 45 + 15 min = 03 : 00 p.m