Mr Tok left for Town A for Town B at 11.30am. He travelled at an average speed of 75km/h. At 12.15pm, Ms Selva left Town A for Town B, travelling on the same route at an average speed of 100km/h.

(a) At what time would Ms Selva overtake Mr Tok? Ans 2.30pm
(b)After Ms Selva had overtaken Mr Tok, she took another 2 hours to reach Town B.What
was the distance between Town A and Town B? Ans 425km