Question

EXAMPLE 8. A boy walking at a speed of 20 km/h
reaches his school 30 min late. Next time he
increased his speed by 5 km/h but still he is late by
10 min. What is the distance of the school from his
home?
100
50
0. km b. km
3
3
100
km
7
2
d. - km
5​

Answer 1

Answer:

Description for Correct answer:

Let the distance = x

Here, the difference in time

= 20 - 5 = 15 min

= 1560= 14 h

Speed during next journey = 15 + 5 = 20 km/h

According to the question,

x15−x20=14

4x−3x60=14

x=604=15

x=15km