At 13 53, Hazel cycled from the mall towards the cinema while Risa cycled from the cinema towards the mall. At 14 13, the two cyclists passed each other. 7 minutes later, Hazel reached cinema but Risa was 1170 m from the mall.
- At what combined speed were the two cyclists approaching each other?
- Find the distance between the cinema and the mall in km.
(a)
From 13 53 to 14 13 = 20 min
Combined speed of the two cyclists
= 1170 ÷ (20 - 7)
= 90 m/min
(b)
Distance between the cinema and the mall
= 20 x 90
= 1800 m
1000 m = 1 km
1800 m = 1.8 km
Distance between the cinema and the mall = 1.8 km
Answer(s): (a) 90 m/min; (b) 1.8 km