A and B are at the starting and finishing points respectively of a 12km cross-country route.
At 07 00, Chad jogs from A towards B at 6km/h.
At 07 30, Wei Liang jogs from B towards A at 3km/h.
(i) What time will Chad and Wei Liang meet?
(ii) How far would Chad have jogged when he meets Wei Liang?
(i) 08 30