In a race around a circular cycling track of 75 km, two cyclists are riding at a speed of 30 km/h and 25 km/h. After what time (in hours) will they meet at the point from which they started their journey?
Show answer & explanation
Correct answer: D
Explanation
The correct answer is Option 4 i.e. 15
Given that
The circular track length is 75 km
The two cyclists are riding at a speed of 30 km/h and 25 km/h
⇒ the relative speed of the two cyclists when they move in the same direction = 30 - 25 = 5 km/h
Formula used
The meeting time at the starting point again = Track length/Relative speed
Calculation
⇒ Meeting time = 75/5 = 15 hours