To make a certain journey, a distance of 10 km is travelled on foot in 3 hours, a distance of 120 km is travelled by car in 3 hours, and a distance of 70 km is travelled by scooter in 4 hours. What is the average speed of the total journey?

20

Formula used :-

Distance = Speed × Time

Total distance = 10 +120 + 70 = 200 km

Total time = 3 + 3 + 4 = 10 hours

Average speed = \(\frac{Total\;  Distance}{Total \; Time }\)

According to question ,

Average speed = \(\frac{(200) }{10}\)

= 20 km/h

So , Average Speed is 20 km/h