Question

2. A car travels a certain distance with a speed of 50 km/hr.and returns with the
speed of 40 km/h. calculate the average speed of the whole journey.

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Answer 1

Answer:

45

Explanation:

average speed= $\frac{50+40}{2}$ = $\frac{90}{2}$=45

Answer 2

Answer:

90 km Is the whole journey

average speed =d/t

=(50 +40 /2 ) km/hr

=( 90/2) km/hr

=45 km/hr