- A can give B a start of 50 metres or 10 seconds in a kilometer race. How
long does A take to complete the race?
(1) 200 seconds (2) 140 seconds (3) 220 seconds (4) 190 seconds
Solution:
A can give B a start of 50 metres or 10 seconds in a 1000 m race.
That is, B takes 10 seconds to run 50 metres.
Therefore, B will take (10/50) * 1000 = 200 seconds to run 1000 metres.
A who can give B a start of 10 seconds will take 10 seconds lesser to run the 1000m.
Hence, the time taken by A = 190 seconds.
