In a 600 m race, A beats B by 37.5 m or by 10 seconds, then the time taken by B to finish the race is
Answer & explanation
Correct answer: option 4
The correct answer is Option (4) → 160 seconds
“By 37.5 m or by 10 seconds” means that B takes 10 seconds to run the last 37.5 m.
\( \displaystyle \text{Speed of B}=\frac{37.5}{10}=3.75\ \text{m/s} \)
\( \displaystyle \text{Time for B}=\frac{600}{3.75}=160\ \text{seconds} \)