In a race of 400 m race, Bhim gave Saral a head start by 20 m at the start of the race. Saral took 48 seconds to complete the race. What was the speed (in m/s) of Bhim if Saral defeated Bhim by a margin of 2 seconds?
Show answer & explanation
Correct answer: B
Explanation
The correct answer is Option 2 i.e. 8.
Race distance = 400 m
Saral's head start = 20 m (Saral runs 380 m, Bhim runs 400 m)
Bhim's time = 48 + 2 = 50 sec
Bhim's speed = 400/50 = 8 m/s