At 5 a.m., Billy and Luke left Park G and drove towards Park H at average speeds of 80 km/h and 60 km/h respectively. Upon reaching Park H, Billy rested for 3 hours. He then headed back for Park G at an average speed of 80 km/h along the same route. Billy and Luke met each other on their way at 1 p.m.
- How far had Billy covered when he met Luke on the way?
- How far apart were the two parks?
(a)
Time taken by Luke = 8 h
Time taken by Billy = 8 - 3 = 5 h
Distance covered by Billy when he met Luke
= 5 x 80
= 400 km
(b)
Distance travelled by Luke
= 8 x 60
= 480 km
Distance of the two parks
= (400 + 480) ÷ 2
= 880 ÷ 2
= 440 km
Answer(s): (a) 400 km; (b) 440 km