What is the average speed of a van which covers half the distance with a speed of 48km/h and the other half with a speed of 24 km/h?

Correct option is C

Given:

Speed for the first half of the journey = 48 km/h

Speed for the second half of the journey = 24 km/h

Formula Used:

Average Speed = $$\frac{2 \times \text{Speed1} \times \text{Speed2}}{\text{Speed1} + \text{Speed2}}$$​​

Solution:

Average Speed = $$\frac{2 \times 48 \times 24}{48 + 24}$$​​

​$$= \frac{2 \times 48 \times 24}{72}$$​​

​$$= \frac{2304}{72} = 32 \, \text{km/h}$$​​