Question

A car travels from A to B at a speed of 20 km/h and returns at a speed of 30 km/h. the average speed of the car for the whole journey is

1) 5 km/h

2) 24 km/h

3) 25 km/h

4) 50 km/h​

Answer 1

Answer:

Hey Buddha,

Here is your answer :-

2) 24km/hr.

Explanation:

Let distance from A to B be x

Time for travel from A to B= x/20

Time for travel from B to A= x/30

Hence,speed for total distance 2x is:

2x/ X/30+X/20 = 2X× 60/5x = 24Km /hr.

Hope it helps you.

With regards, Divya.