At 6 a.m., Oscar and Riordan left Park E and drove towards Park F at average speeds of 80 km/h and 52 km/h respectively. Upon reaching Park F, Oscar rested for 3 hours. He then headed back for Park E at an average speed of 80 km/h along the same route. Oscar and Riordan met each other on their way at 12 noon.
- How far had Oscar covered when he met Riordan on the way?
- How far apart were the two parks?
(a)
Time taken by Riordan = 6 h
Time taken by Oscar = 6 - 3 = 3 h
Distance covered by Oscar when he met Riordan
= 3 x 80
= 240 km
(b)
Distance travelled by Riordan
= 6 x 52
= 312 km
Distance of the two parks
= (240 + 312) ÷ 2
= 552 ÷ 2
= 276 km
Answer(s): (a) 240 km; (b) 276 km