At 6 a.m., Ethan and Pierre left Park V and drove towards Park W at average speeds of 70 km/h and 54 km/h respectively. Upon reaching Park W, Ethan rested for 3 hours. He then headed back for Park V at an average speed of 70 km/h along the same route. Ethan and Pierre met each other on their way at 12 noon.
- How far had Ethan covered when he met Pierre on the way?
- How far apart were the two parks?
(a)
Time taken by Pierre = 6 h
Time taken by Ethan = 6 - 3 = 3 h
Distance covered by Ethan when he met Pierre
= 3 x 70
= 210 km
(b)
Distance travelled by Pierre
= 6 x 54
= 324 km
Distance of the two parks
= (210 + 324) ÷ 2
= 534 ÷ 2
= 267 km
Answer(s): (a) 210 km; (b) 267 km