Question

If a boy walks from his house at 4 km/hr,
he reaches school 10 minutes early. If he
walks at 3 km/hr, he reaches 10 minutes
late. What is the distance from his house
to school ? plz explain it​

Answer 1

Let the boy be x

Let the time be y

x+4=10-y (1)

x+3=10+y (2)

x=6-y (1)

Sub x in (2)

6-y+3=10+y

-2y=1

y=-1/2

Sub y in (1)

x=6+1/2

x=13/2