At 9 a.m., Ivan and Valen left Park K and drove towards Park L at average speeds of 77 km/h and 52 km/h respectively. Upon reaching Park L, Ivan rested for 3 hours. He then headed back for Park K at an average speed of 77 km/h along the same route. Ivan and Valen met each other on their way at 2 p.m.
- How far had Ivan covered when he met Valen on the way?
- How far apart were the two parks?
(a)
Time taken by Valen = 5 h
Time taken by Ivan = 5 - 3 = 2 h
Distance covered by Ivan when he met Valen
= 2 x 77
= 154 km
(b)
Distance travelled by Valen
= 5 x 52
= 260 km
Distance of the two parks
= (154 + 260) ÷ 2
= 414 ÷ 2
= 207 km
Answer(s): (a) 154 km; (b) 207 km