At 5 a.m., Ivan and Sam left Park Z and drove towards Park A at average speeds of 79 km/h and 64 km/h respectively. Upon reaching Park A, Ivan rested for 3 hours. He then headed back for Park Z at an average speed of 79 km/h along the same route. Ivan and Sam met each other on their way at 12 noon.
- How far had Ivan covered when he met Sam on the way?
- How far apart were the two parks?
(a)
Time taken by Sam = 7 h
Time taken by Ivan = 7 - 3 = 4 h
Distance covered by Ivan when he met Sam
= 4 x 79
= 316 km
(b)
Distance travelled by Sam
= 7 x 64
= 448 km
Distance of the two parks
= (316 + 448) ÷ 2
= 764 ÷ 2
= 382 km
Answer(s): (a) 316 km; (b) 382 km