Question : A car travels from A to B at the rate of 40 km/h and returns from B to A at the rate of 60 km/h. Its average speed during the whole journey is:
Option 1: 48 km/h
Option 2: 50 km/h
Option 3: 45 km/h
Option 4: 60 km/h

Question

Question : A car travels from A to B at the rate of 40 km/h and returns from B to A at the rate of 60 km/h. Its average speed during the whole journey is:

Option 1: 48 km/h

Option 2: 50 km/h

Option 3: 45 km/h

Option 4: 60 km/h

Team Careers360 · Accepted Answer

Correct Answer: 48 km/h

Solution : Given: A car travels from A to B at the rate of $x$ = 40 km/h and returns from B to A at $y$ = 60 km/h.
The car's average speed is calculated using the formula, $\frac{2xy}{x+y}$.
Average speed = $\frac{2 imes 40 imes 60}{40+60}=\frac{4800}{100}$
= 48 km/h
Hence, the correct answer is 48 km/h.

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Question : A car travels from A to B at the rate of 40 km/h and returns from B to A at the rate of 60 km/h. Its average speed during the whole journey is:Option 1: 48 km/hOption 2: 50 km/hOption 3: 45 km/hOption 4: 60 km/h

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Question : A car travels from A to B at the rate of 40 km/h and returns from B to A at the rate of 60 km/h. Its average speed during the whole journey is:
Option 1: 48 km/h
Option 2: 50 km/h
Option 3: 45 km/h
Option 4: 60 km/h