At 5 a.m., Ryan and Lee left Park R and drove towards Park S at average speeds of 98 km/h and 50 km/h respectively. Upon reaching Park S, Ryan rested for 2 hours. He then headed back for Park R at an average speed of 98 km/h along the same route. Ryan and Lee met each other on their way at 12 noon.
- How far had Ryan covered when he met Lee on the way?
- How far apart were the two parks?
(a)
Time taken by Lee = 7 h
Time taken by Ryan = 7 - 2 = 5 h
Distance covered by Ryan when he met Lee
= 5 x 98
= 490 km
(b)
Distance travelled by Lee
= 7 x 50
= 350 km
Distance of the two parks
= (490 + 350) ÷ 2
= 840 ÷ 2
= 420 km
Answer(s): (a) 490 km; (b) 420 km