At 10 51, Risa cycled from the bank towards the grocery store while Betty cycled from the grocery store towards the bank. At 11 11, the two cyclists passed each other. 13 minutes later, Risa reached grocery store but Betty was 1169 m from the bank.
- At what combined speed were the two cyclists approaching each other?
- Find the distance between the grocery store and the bank in km.
(a)
From 10 51 to 11 11 = 20 min
Combined speed of the two cyclists
= 1169 ÷ (20 - 13)
= 167 m/min
(b)
Distance between the grocery store and the bank
= 20 x 167
= 3340 m
1000 m = 1 km
3340 m = 3.34 km
Distance between the grocery store and the bank = 3.34 km
Answer(s): (a) 167 m/min; (b) 3.34 km