At 6 a.m., Billy and Ian left Park U and drove towards Park V at average speeds of 90 km/h and 58 km/h respectively. Upon reaching Park V, Billy rested for 3 hours. He then headed back for Park U at an average speed of 90 km/h along the same route. Billy and Ian met each other on their way at 1 p.m.
- How far had Billy covered when he met Ian on the way?
- How far apart were the two parks?
(a)
Time taken by Ian = 7 h
Time taken by Billy = 7 - 3 = 4 h
Distance covered by Billy when he met Ian
= 4 x 90
= 360 km
(b)
Distance travelled by Ian
= 7 x 58
= 406 km
Distance of the two parks
= (360 + 406) ÷ 2
= 766 ÷ 2
= 383 km
Answer(s): (a) 360 km; (b) 383 km