At 7 a.m., Valen and Jack left Park M and drove towards Park N at average speeds of 72 km/h and 60 km/h respectively. Upon reaching Park N, Valen rested for 3 hours. He then headed back for Park M at an average speed of 72 km/h along the same route. Valen and Jack met each other on their way at 2 p.m.
- How far had Valen covered when he met Jack on the way?
- How far apart were the two parks?
(a)
Time taken by Jack = 7 h
Time taken by Valen = 7 - 3 = 4 h
Distance covered by Valen when he met Jack
= 4 x 72
= 288 km
(b)
Distance travelled by Jack
= 7 x 60
= 420 km
Distance of the two parks
= (288 + 420) ÷ 2
= 708 ÷ 2
= 354 km
Answer(s): (a) 288 km; (b) 354 km