Question

A boy travels at a speed of $18\text{kmph}$ on his bicycle. If he has to travel $500\text{m}$ from his home to his school, how long will it take for him to reach there?

• A. $100\text{min}$
• B. $1\text{min}40\text{s}$
• C. $1\text{hr}40\text{s}$
• D. $1\text{hr}40\text{min}$

Answer 1

The correct option is B $1\text{min}40\text{s}$

Given, speed of the boy is $18\text{kmph}=18\times \frac{5}{18}=5{\text{m s}}^{-1}$

Distance $=500\text{m}$

Time$=\frac{500}{5}=100\text{s}=1\text{min}40\text{s}$