At 8 a.m., Riordan and Luis left Park T and drove towards Park U at average speeds of 86 km/h and 65 km/h respectively. Upon reaching Park U, Riordan rested for 3 hours. He then headed back for Park T at an average speed of 86 km/h along the same route. Riordan and Luis met each other on their way at 2 p.m.
- How far had Riordan covered when he met Luis on the way?
- How far apart were the two parks?
(a)
Time taken by Luis = 6 h
Time taken by Riordan = 6 - 3 = 3 h
Distance covered by Riordan when he met Luis
= 3 x 86
= 258 km
(b)
Distance travelled by Luis
= 6 x 65
= 390 km
Distance of the two parks
= (258 + 390) ÷ 2
= 648 ÷ 2
= 324 km
Answer(s): (a) 258 km; (b) 324 km