At 5 a.m., Ivan and Albert left Park J and drove towards Park K at average speeds of 81 km/h and 52 km/h respectively. Upon reaching Park K, Ivan rested for 3 hours. He then headed back for Park J at an average speed of 81 km/h along the same route. Ivan and Albert met each other on their way at 12 noon.
- How far had Ivan covered when he met Albert on the way?
- How far apart were the two parks?
(a)
Time taken by Albert = 7 h
Time taken by Ivan = 7 - 3 = 4 h
Distance covered by Ivan when he met Albert
= 4 x 81
= 324 km
(b)
Distance travelled by Albert
= 7 x 52
= 364 km
Distance of the two parks
= (324 + 364) ÷ 2
= 688 ÷ 2
= 344 km
Answer(s): (a) 324 km; (b) 344 km