Practicing Success
A jeep travels to a place 300 km away at an average speed of 60 km/h and returns at a speed of 30 km/h. What is the average speed (in km/h) for the whole journey? |
75 80 40 60 |
40 |
Formula used :- Speed = \(\frac{Distance}{Time}\) Time taken by jeep to travel 300km = \(\frac{300}{60}\) = 5hour Time taken by jeep to travel 300km while returning = \(\frac{300}{30}\) = 10hour Average speed = \(\frac{Total\;Distance}{Total\;Time}\) = \(\frac{300 + 300 }{10 + 5 }\) = \(\frac{600}{15}\) = 40 km/h |