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?
Answer & explanation
Correct answer: option 4
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