Question

A boy walks from his house to his school. If he walka at a speed 2½ km per hour, he reaches his school in 30 minutes.How far is the school from his house​

Answer 1

Answer:

32

Step-by-step explanation:

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Answer 2

Answer:

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Step-by-step explanation:

Let the distance of school and house is x k m

Then time taken at speed 2.5 km\hr=

2.5

x

hr

And time taken at speed 4 km\hr=

4

x

hr

∴

2.5

x

−

4

x

=

60

12

⇒

10

4x−2.5x

=

5

1

⇒x=3 km

Then the distance of school and house is 3 k m

Answered By me.