At 5 a.m., Cole and Bobby left Park K and drove towards Park L at average speeds of 70 km/h and 60 km/h respectively. Upon reaching Park L, Cole rested for 3 hours. He then headed back for Park K at an average speed of 70 km/h along the same route. Cole and Bobby met each other on their way at 2 p.m.
- How far had Cole covered when he met Bobby on the way?
- How far apart were the two parks?
(a)
Time taken by Bobby = 9 h
Time taken by Cole = 9 - 3 = 6 h
Distance covered by Cole when he met Bobby
= 6 x 70
= 420 km
(b)
Distance travelled by Bobby
= 9 x 60
= 540 km
Distance of the two parks
= (420 + 540) ÷ 2
= 960 ÷ 2
= 480 km
Answer(s): (a) 420 km; (b) 480 km