Question

A sprinter attains a maximum speed of 10 m/s. What will be his speed in
km/hr.

Answer 1

1/100/1/3600 = 36km/hr

Answer 2

Question :

A sprinter attains a maximum speed of 10 m/s. What will be his speed in km/hr

Formula :

x m/s = $\tt \frac{18x}{5}$ km/hr

Solution :

10 m/s = $\tt \frac{18×10}{5}$ km/hr

$\implies$ 10 m/s = 18 × 2 km/hr

$\implies$ 10 m/s = 36 km/hr

$\therefore$ 10 m/s = 36 km/hr