A person travels to a hill if he goes from a to b with speed of 4km/h

1.	A person travels to a hill if he goes from a to b with speed of 4km/h and return back with speed of 5km/h. What is his average speed
Answer» Explanation: as we know average SPEED= TOTAL DISTANCE traveled/total time. let he travels distance S from a to B so we have total distance =2S time to go from a to b =S/4 time to go from b to a= S/5 so we have total time =S/4 +S/5 that is =9S/20 now ACC. to formula, average speed =2S/{9S÷20} =40/9km/hour.

A person travels to a hill if he goes from a to b with speed of 4km/h and return back with speed of 5km/h. What is his average speed

Answer»

Explanation:

as we know

average SPEED=

TOTAL DISTANCE traveled/total time.

let he travels distance S from a to B

so we have total distance =2S

time to go from a to b =S/4

time to go from b to a= S/5

so we have total time =S/4 +S/5

that is =9S/20

now ACC. to formula,

average speed =2S/{9S÷20}

=40/9km/hour.

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A person travels to a hill if he goes from a to b with speed of 4km/h and return back with speed of 5km/h. What is his average speed

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