Question

A car travels a certain distance from town a to town b at the speed of 42 km/h and from town b to town a at a speed of 48 km/h. what is the average speed of the car

Answer 1

45 km/h is the average speed of the car

Answer 2

Answer:

Step-by-step explanation:

let the 2 equal distances are covered at speed x km/h, then the average speed of the journey -2xy/x+y

Hence,average speed of the car=2x42x48/42+48