At 5 a.m., Bryan and Billy left Park D and drove towards Park E at average speeds of 100 km/h and 62 km/h respectively. Upon reaching Park E, Bryan rested for 3 hours. He then headed back for Park D at an average speed of 100 km/h along the same route. Bryan and Billy met each other on their way at 12 noon.
- How far had Bryan covered when he met Billy on the way?
- How far apart were the two parks?
(a)
Time taken by Billy = 7 h
Time taken by Bryan = 7 - 3 = 4 h
Distance covered by Bryan when he met Billy
= 4 x 100
= 400 km
(b)
Distance travelled by Billy
= 7 x 62
= 434 km
Distance of the two parks
= (400 + 434) ÷ 2
= 834 ÷ 2
= 417 km
Answer(s): (a) 400 km; (b) 417 km
