Question

A boy walks from his house to his school. If he walk
at a speed of 2 1/2 km/perhour he reaches his
school in 30 minutes. How far is the school from house​

Answer 1

Answer:

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

Step-by-step explanation:

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