At 7 a.m., Perry and Charlie left Park R and drove towards Park S at average speeds of 85 km/h and 51 km/h respectively. Upon reaching Park S, Perry rested for 2 hours. He then headed back for Park R at an average speed of 85 km/h along the same route. Perry and Charlie met each other on their way at 1 p.m.
- How far had Perry covered when he met Charlie on the way?
- How far apart were the two parks?
(a)
Time taken by Charlie = 6 h
Time taken by Perry = 6 - 2 = 4 h
Distance covered by Perry when he met Charlie
= 4 x 85
= 340 km
(b)
Distance travelled by Charlie
= 6 x 51
= 306 km
Distance of the two parks
= (340 + 306) ÷ 2
= 646 ÷ 2
= 323 km
Answer(s): (a) 340 km; (b) 323 km