Peter took 20 min to jog from his home to his school. After that, he took 30 min to walk the same way home. His walking speed was 3 km/h slower than his jogging speed.
- Find Peter's jogging speed in km/h.
- How far was the school from his home?
(a)
Walk Time : Jog Time
30 : 20
3 : 2
Walk Speed : Jog Speed : Difference in speed
2 : 3 : 3 - 2
2 : 3 : 1
1 u = 3
3 u = 3 x 3 = 9
Peter's jogging speed = 9 km/h
(b)
60 min = 1 h
20 min =
2060 h =
13 h
Distance between the school and his home
=
13 x 9
= 3 km
Answer(s): (a) 9 km/h; (b) 3 km