A square shaped track has a perimeter of 450 m.

Frank and John started running along the track at 0834 from the same point and in the same direction at constant speeds.

Frank could complete 1 round of the track in 30 s while John could complete 1 round of the track in 45 s.

(a) If both individuals continued running, Frank would eventually overtake John.

How much time would it take Frank to overtake John for the first time?

(b) How many rounds did Frank run after overtaking John for the first time?

Notes to student:

1. If the question above has parts, (e.g. (a) and (b)), given that the answer for part (a) is 10 and the answer for part (b) is 12, give your answer as:10,12