Races And Games Q2

2. In a km race, A beats B by 28 meters or 7 seconds. Finds time over the course.

A.)     3 min 5 sec

B.)     4 min 3 sec

C.)     7 min 2 sec

D.)     11 min 30 sec

Answer: Option B

Explanation:

Clearly, B covers 28 m in 7 seconds

B’s time over the course = (7/28 x 1000) sec = 250 seconds

 A’s time over the course = (250 - 7) sec = 243 seconds

= 4 min 3 sec