In a linear race of 1000 m, A beats B by 50 m or 5 seconds. What is the difference between the speeds (in m/s) of A and B?

Answer: Option B

Solution

Answer: Option B

Solution:

$$\begin{array}{rl}& \text{Speed of B}=\frac{50}{5}=10\text{ m/sec}\\ & \text{Time same}\\ & \text{Then,}\end{array}$$

$$\text{Difference in speed}=\frac{200}{1}-\frac{10}{1}=\frac{10}{19}$$