At 5 a.m., Bobby and Albert left Park U and drove towards Park V at average speeds of 85 km/h and 63 km/h respectively. Upon reaching Park V, Bobby rested for 2 hours. He then headed back for Park U at an average speed of 85 km/h along the same route. Bobby and Albert met each other on their way at 12 noon.
- How far had Bobby 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 Bobby = 7 - 2 = 5 h
Distance covered by Bobby when he met Albert
= 5 x 85
= 425 km
(b)
Distance travelled by Albert
= 7 x 63
= 441 km
Distance of the two parks
= (425 + 441) ÷ 2
= 866 ÷ 2
= 433 km
Answer(s): (a) 425 km; (b) 433 km