Question

4. A boy walks from his house to his school. If he walks at a speed of 272 km per hour, he
reaches his school in 30 minutes. How far is the school from his house?
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Answer 1

Answer:

136m far is the school from his house

Step-by-step explanation:

speed=272km/h

time=30min

distance=speed×time

=272×30/60

136m

Answer 2

Given that,

• Speed of the boy = 272km/h

• Convert 272 km/h to m/s = [km/h to m/s = 3600 seconds/1000m = 5/18] to convert km/h to m/s we should multiply with 5/18

⇒ 272×5/18 m/s = 75.5 m/s

• Therefore, speed of the boy is 75.5 m/s.

• Time taken by the boy = 30 min = 1800 seconds.

• Distance = ?

we know that,

⇒ Distance = speed × time

⇒ Distance = 75.5 m/sec × 1800 sec

⇒ Distance = 135900 meters.

⇒ Distance = 135.9 km

Therefore, the distance between his house and the school is 135.9 km

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