At 12 57, Rachel cycled from the grocery store towards the hypermart while Risa cycled from the hypermart towards the grocery store. At 13 17, the two cyclists passed each other. 15 minutes later, Rachel reached hypermart but Risa was 985 m from the grocery store.
- At what combined speed were the two cyclists approaching each other?
- Find the distance between the hypermart and the grocery store in km.
(a)
From 12 57 to 13 17 = 20 min
Combined speed of the two cyclists
= 985 ÷ (20 - 15)
= 197 m/min
(b)
Distance between the hypermart and the grocery store
= 20 x 197
= 3940 m
1000 m = 1 km
3940 m = 3.94 km
Distance between the hypermart and the grocery store = 3.94 km
Answer(s): (a) 197 m/min; (b) 3.94 km