In a 500 m race, A beats B by 40 metres or 8 seconds. Find A's time over the course.
A
100 s
B
92 s
C
108 s
D
98 s
Correct Option - B
Explaination
B covers 40 meters in 8 seconds.
B's speed = 40/8 = 5 m/s
Time taken by B to cover 500m
= 500/5
= 100 seconds
A beats B by 8 seconds. Hence,
Time taken by A
= 100-8
= 92 seconds