Question

a bike reaches point a to b with uniform speed of 30km /have and backs with uniform speed of 20km /h. find average speed ​

Answer 1

Answer:

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Answer 2

Explanation:

when these type of questions are given , just apply

$v = \frac{2xy}{x + y}$

so, now ,

avg speed =

$\frac{2 \times 30 \times 20}{20 + 30}$

Vavg= 24 km/h

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