At 7 a.m., John and Oliver left Park H and drove towards Park J at average speeds of 90 km/h and 55 km/h respectively. Upon reaching Park J, John rested for 2 hours. He then headed back for Park H at an average speed of 90 km/h along the same route. John and Oliver met each other on their way at 1 p.m.
- How far had John covered when he met Oliver on the way?
- How far apart were the two parks?
(a)
Time taken by Oliver = 6 h
Time taken by John = 6 - 2 = 4 h
Distance covered by John when he met Oliver
= 4 x 90
= 360 km
(b)
Distance travelled by Oliver
= 6 x 55
= 330 km
Distance of the two parks
= (360 + 330) ÷ 2
= 690 ÷ 2
= 345 km
Answer(s): (a) 360 km; (b) 345 km