At 6 a.m., Zeph and Justin left Park E and drove towards Park F at average speeds of 80 km/h and 55 km/h respectively. Upon reaching Park F, Zeph rested for 3 hours. He then headed back for Park E at an average speed of 80 km/h along the same route. Zeph and Justin met each other on their way at 12 noon.
- How far had Zeph covered when he met Justin on the way?
- How far apart were the two parks?
(a)
Time taken by Justin = 6 h
Time taken by Zeph = 6 - 3 = 3 h
Distance covered by Zeph when he met Justin
= 3 x 80
= 240 km
(b)
Distance travelled by Justin
= 6 x 55
= 330 km
Distance of the two parks
= (240 + 330) ÷ 2
= 570 ÷ 2
= 285 km
Answer(s): (a) 240 km; (b) 285 km
