At 11 57, Usha cycled from the playground towards the mosque while Risa cycled from the mosque towards the playground. At 12 12, the two cyclists passed each other. 12 minutes later, Usha reached mosque but Risa was 942 m from the playground.
- At what combined speed were the two cyclists approaching each other?
- Find the distance between the mosque and the playground in km.
(a)
From 11 57 to 12 12 = 15 min
Combined speed of the two cyclists
= 942 ÷ (15 - 12)
= 314 m/min
(b)
Distance between the mosque and the playground
= 15 x 314
= 4710 m
1000 m = 1 km
4710 m = 4.71 km
Distance between the mosque and the playground = 4.71 km
Answer(s): (a) 314 m/min; (b) 4.71 km