Question 60

A beats B by 125 m in a kilometer race. Find B’s speed if A’s speed is 16 m/sec.:

Solution

A beats B by 125 m in a kilometer race, that means when A covers 1000 m, B only covers 875 m in the same time

Let speed of B = $$x$$ m/s, and speed $$\propto$$ distance

=> $$\frac{1000}{875}=\frac{16}{x}$$

=> $$x=16\times\frac{7}{8}=14$$

$$\therefore$$ Speed of B = 14 m/s

=> Ans - (B)

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