At 8 a.m., Billy and Howard left Park D and drove towards Park E at average speeds of 78 km/h and 62 km/h respectively. Upon reaching Park E, Billy rested for 3 hours. He then headed back for Park D at an average speed of 78 km/h along the same route. Billy and Howard met each other on their way at 2 p.m.
- How far had Billy covered when he met Howard on the way?
- How far apart were the two parks?
(a)
Time taken by Howard = 6 h
Time taken by Billy = 6 - 3 = 3 h
Distance covered by Billy when he met Howard
= 3 x 78
= 234 km
(b)
Distance travelled by Howard
= 6 x 62
= 372 km
Distance of the two parks
= (234 + 372) ÷ 2
= 606 ÷ 2
= 303 km
Answer(s): (a) 234 km; (b) 303 km