Practicing Success
Practicing Success
CUET Preparation Today
A car covers a certain distance travelling at a speed of 60 km/h and returns to the starting point at a speed of 40 km/h. The average speed of the car for the entire journey is: |
20 km/h 48 km/h 120 km/h 50 km/h |
48 km/h |
We know , Average speed = \(\frac{2 × S1 ×S2 }{S1 + S2}\) According to question , Average speed = \(\frac{2 × 60 × 40 }{60 + 40}\) = 48 km/h |
