At 6 a.m., Lee and Ryan left Park G and drove towards Park H at average speeds of 90 km/h and 63 km/h respectively. Upon reaching Park H, Lee rested for 2 hours. He then headed back for Park G at an average speed of 90 km/h along the same route. Lee and Ryan met each other on their way at 12 noon.
- How far had Lee covered when he met Ryan on the way?
- How far apart were the two parks?
(a)
Time taken by Ryan = 6 h
Time taken by Lee = 6 - 2 = 4 h
Distance covered by Lee when he met Ryan
= 4 x 90
= 360 km
(b)
Distance travelled by Ryan
= 6 x 63
= 378 km
Distance of the two parks
= (360 + 378) ÷ 2
= 738 ÷ 2
= 369 km
Answer(s): (a) 360 km; (b) 369 km