At 9 a.m., Jack and George left Park K and drove towards Park L at average speeds of 70 km/h and 60 km/h respectively. Upon reaching Park L, Jack rested for 3 hours. He then headed back for Park K at an average speed of 70 km/h along the same route. Jack and George met each other on their way at 2 p.m.
- How far had Jack covered when he met George on the way?
- How far apart were the two parks?
(a)
Time taken by George = 5 h
Time taken by Jack = 5 - 3 = 2 h
Distance covered by Jack when he met George
= 2 x 70
= 140 km
(b)
Distance travelled by George
= 5 x 60
= 300 km
Distance of the two parks
= (140 + 300) ÷ 2
= 440 ÷ 2
= 220 km
Answer(s): (a) 140 km; (b) 220 km