In a 700 m race, Amit reaches the finish point in 20 seconds and Rahul reaches in 25 seconds. Amit beats Rahul by a distance of:
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → 140 m
When Amit finishes, 20 seconds have passed. Amit beats Rahul by the distance Rahul still has to run at that moment.
\( \displaystyle \text{Rahul's speed} = \frac{700}{25} = 28 \text{ m/s} \)
\(\text{distance run by Rahul in 20 s} = 28 \times 20 = 560 \text{ m}\)
\(\text{margin} = 700 - 560 = 140 \text{ m}\)