At 6 a.m., Rael and Bryan left Park D and drove towards Park E at average speeds of 71 km/h and 52 km/h respectively. Upon reaching Park E, Rael rested for 2 hours. He then headed back for Park D at an average speed of 71 km/h along the same route. Rael and Bryan met each other on their way at 2 p.m.
- How far had Rael covered when he met Bryan on the way?
- How far apart were the two parks?
(a)
Time taken by Bryan = 8 h
Time taken by Rael = 8 - 2 = 6 h
Distance covered by Rael when he met Bryan
= 6 x 71
= 426 km
(b)
Distance travelled by Bryan
= 8 x 52
= 416 km
Distance of the two parks
= (426 + 416) ÷ 2
= 842 ÷ 2
= 421 km
Answer(s): (a) 426 km; (b) 421 km