At 2.30 p.m., Jean and Elijah left Hotel P for Hotel Q at average speeds of 84 km/h and 54 km/h respectively. Upon reaching Hotel Q, Jean rested for 20 minutes. She then headed back for Hotel P at an average speed of 84 km/h along the same route. Elijah and Jean met each other on their way at 7 p.m.
- How much more distance had Jean covered than Elijah when they met on their way?
- How far apart were Hotel P and Hotel Q? Express your answer in mixed number.
(a)
Duration from 2.30 p.m. to 7 p.m. = 4 h 30 min = 4
12 h
Duration from 2.30 p.m. to 7 p.m. without 20 min rest = 4 h 10 min = 4
16 h
60 min = 1 h
30 min =
3060 =
12 h
10 min =
1060 =
16 h
Distance covered by Jean
= 84 x 4
16= 84 x
256 = 350 km
Distance covered by Elijah
= 54 x 4
16= 54 x
256= 243 km
Distance that Jean covered more than Elijah
= 350 - 243
= 107 km
(b)
Distance between Hotel P and Hotel Q
= (350 + 243) ÷ 2
= 593 ÷ 2
= 296
12 km
Answer(s): (a) 107 km; (b) 296
12 km