Question 51

A travels 15 km with a speed of 30 km/h. He travels another 25 km with a speed of 10 km/h. What is his average speed for the entire journey?

Solution

Total time taken in the journey = $$ \frac{15}{30} + \frac{25}{10} = \frac{90}{30} = 3 hours$$

Total distance = 15 + 25 = 40 km

Average speed = $$\frac{40}{3}$$ km/hr

So, the answer would be option a)$$\frac{40}{3}$$ km/h

Share on Whatsapp Share on Whatsapp

Create a FREE account and get: