At 6 a.m., Zeph and Ryan left Park S and drove towards Park T at average speeds of 80 km/h and 52 km/h respectively. Upon reaching Park T, Zeph rested for 2 hours. He then headed back for Park S at an average speed of 80 km/h along the same route. Zeph and Ryan met each other on their way at 12 noon.
- How far had Zeph covered when he met Ryan on the way?
- How far apart were the two parks?
(a)
Time taken by Ryan = 6 h
Time taken by Zeph = 6 - 2 = 4 h
Distance covered by Zeph when he met Ryan
= 4 x 80
= 320 km
(b)
Distance travelled by Ryan
= 6 x 52
= 312 km
Distance of the two parks
= (320 + 312) ÷ 2
= 632 ÷ 2
= 316 km
Answer(s): (a) 320 km; (b) 316 km