Question

A car takes 20 minutes to cover 15 km. Calculate its speed in km/h.

Answer 1

Given:
Distance travelled by the car = 15 km
Time taken by the car to cover the given distance = 20 min
Converting the time taken from minutes to hours:
Time taken by the car = 20 min = $\frac{20}{60}$= $\frac{1}{3}$ hours
Speed of the body is calculated using the following relation:

$\mathrm{Speed}=\frac{\mathrm{Distance}\mathrm{travelled}}{\mathrm{Time}\mathrm{taken}}$


Speed = $\frac{15\mathrm{km}}{{\displaystyle \frac{1}{3}}\mathrm{h}}$


= 45 km/h

Therefore, the speed of the car is 45 km/h.