Question

A car travels 45km in an hour. In each of the next two hours, it travels 78km. What is the average speed of the car.

Answer 1

The average speed of car is 67 kilometers per hour.

Explanation:

Given that:

Distance travelled in one hour = 45 km

Distance travelled in next 2 hours = 78*2 = 156 km

Total distance = 45+156 = 201

Total time = 1+2 = 3 hours

Average speed of the car =
`(Total\ distance)/(Total\ time)`

Average speed of the car =
`(201)/(3)`

Average speed of the car = 67 km/hr

Hence,

The average speed of car is 67 kilometers per hour.