At 5 a.m., Charlie and Jeremy left Park Z and drove towards Park A at average speeds of 100 km/h and 60 km/h respectively. Upon reaching Park A, Charlie rested for 2 hours. He then headed back for Park Z at an average speed of 100 km/h along the same route. Charlie and Jeremy met each other on their way at 1 p.m.
- How far had Charlie covered when he met Jeremy on the way?
- How far apart were the two parks?
(a)
Time taken by Jeremy = 8 h
Time taken by Charlie = 8 - 2 = 6 h
Distance covered by Charlie when he met Jeremy
= 6 x 100
= 600 km
(b)
Distance travelled by Jeremy
= 8 x 60
= 480 km
Distance of the two parks
= (600 + 480) ÷ 2
= 1080 ÷ 2
= 540 km
Answer(s): (a) 600 km; (b) 540 km