At 8 a.m., Riordan and Owen left Park M and drove towards Park N at average speeds of 80 km/h and 55 km/h respectively. Upon reaching Park N, Riordan rested for 2 hours. He then headed back for Park M at an average speed of 80 km/h along the same route. Riordan and Owen met each other on their way at 2 p.m.
- How far had Riordan covered when he met Owen on the way?
- How far apart were the two parks?
(a)
Time taken by Owen = 6 h
Time taken by Riordan = 6 - 2 = 4 h
Distance covered by Riordan when he met Owen
= 4 x 80
= 320 km
(b)
Distance travelled by Owen
= 6 x 55
= 330 km
Distance of the two parks
= (320 + 330) ÷ 2
= 650 ÷ 2
= 325 km
Answer(s): (a) 320 km; (b) 325 km