At 11 58, Sarah cycled from the library towards the cinema while Olivia cycled from the cinema towards the library. At 12 18, the two cyclists passed each other. 15 minutes later, Sarah reached cinema but Olivia was 1000 m from the library.
- At what combined speed were the two cyclists approaching each other?
- Find the distance between the cinema and the library in km.
(a)
From 11 58 to 12 18 = 20 min
Combined speed of the two cyclists
= 1000 ÷ (20 - 15)
= 200 m/min
(b)
Distance between the cinema and the library
= 20 x 200
= 4000 m
1000 m = 1 km
4000 m = 4 km
Distance between the cinema and the library = 4 km
Answer(s): (a) 200 m/min; (b) 4 km