Question

A car travels first 60 km in 2 hours and next 100 km in 3 hours. Find the average speed of the car.

• A. 160 $km{h}^{-1}$
• B. 100 $km{h}^{-1}$
• C. 32 $km{h}^{-1}$
• D. 23 $km{h}^{-1}$

Answer 1

The correct option is C

32 $km{h}^{-1}$

Average speed = $\frac{\text{Total Distance travelled}}{\text{Total time taken}}$

Here, total distance travelled = 60 km + 100 km

= 160 km

and, total time = 2 hours + 3 hours

= 5 hours

$\therefore$ Average speed = $\frac{160}{5}$

= 32 $km{h}^{-1}$