At 5 a.m., Sam and Justin left Park Y and drove towards Park Z at average speeds of 93 km/h and 57 km/h respectively. Upon reaching Park Z, Sam rested for 2 hours. He then headed back for Park Y at an average speed of 93 km/h along the same route. Sam and Justin met each other on their way at 2 p.m.
- How far had Sam covered when he met Justin on the way?
- How far apart were the two parks?
(a)
Time taken by Justin = 9 h
Time taken by Sam = 9 - 2 = 7 h
Distance covered by Sam when he met Justin
= 7 x 93
= 651 km
(b)
Distance travelled by Justin
= 9 x 57
= 513 km
Distance of the two parks
= (651 + 513) ÷ 2
= 1164 ÷ 2
= 582 km
Answer(s): (a) 651 km; (b) 582 km