At 7 a.m., Jeremy and Bobby left Park Z and drove towards Park A at average speeds of 78 km/h and 60 km/h respectively. Upon reaching Park A, Jeremy rested for 3 hours. He then headed back for Park Z at an average speed of 78 km/h along the same route. Jeremy and Bobby met each other on their way at 2 p.m.
- How far had Jeremy covered when he met Bobby on the way?
- How far apart were the two parks?
(a)
Time taken by Bobby = 7 h
Time taken by Jeremy = 7 - 3 = 4 h
Distance covered by Jeremy when he met Bobby
= 4 x 78
= 312 km
(b)
Distance travelled by Bobby
= 7 x 60
= 420 km
Distance of the two parks
= (312 + 420) ÷ 2
= 732 ÷ 2
= 366 km
Answer(s): (a) 312 km; (b) 366 km