Question

A boy walks from his home to a post office at a distance of 0.5km in 20minutes. He then returns to his home in time 25 minutes. Find the average speed of the boy. Help me please

Answer 1

Explanation:

Hi.

Here is your answer------

Let the distance between the school and the house is x km

speed of the boy from house to school = 20 km/hr.

Using formula, Time taken = distance/speed

So, time taken = x/20 hours.

Also,

Speed of the boy from school to the house = 30 km/hr

so, time taken = x/30 hours.

Total time taken = x/20 + x/30

= x/12 hours

Also total distance covered by boy = x +x

= 2 x km.

Using formula,

Average speed = Total distance/ Total time

= 2 x/(x/12)

= 24 km/hr.

Thus, average speed of the boy's journey is 24 km/hr.

Hope this will help u.

Have a nice day.

Please mark this answer as Brainliest.Going from home to school-

Constant speed = 2.5km/h

Distance = 6km

Time taken = 6/2.5

= 2.4 hours

Going from school to home-

Constant speed = 4km/h

Distance = 6km

Time taken = 6/4

= 1.5 hours

Total time is taken in traveling = 3.9 hours

Total distance = 12km

Average speed of round-trip = 12/3.9

= 3.08 hours

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Answer 2

Answer:

If you find mean of his speed you absolutely answer