Mark and Sean started jogging from the same point. Sean started jogging 9 minutes earlier than Mark. Mark's jogging speed was 450 m/min and Sean's jogging speed was 300 m/min. They went in the same direction and did not change their speeds throughout.

1. How long did it take for Mark to catch up with Sean? 
2. What distance would Sean have jogged when Mark caught up with him?  Express your answer in meters.

	Mark	Sean
Speed	450 m/min	300 m/min
Start time		9 min earlier
Extra distance covered at first		2700 m

(a)
Distance that Sean covered when he jogged 9 minutes earlier
= 9 x 300
= 2700 m

Distance that Mark covered more than Sean per min
= 450 - 300
= 150 m

Time that Mark needed to take to cover the additional 2700 m
= 2700 ÷ 150
= 18 min

(b)
Time that Sean would had jogged when Mark caught up with him
= 18 + 9
= 27 min

Distance that Sean would have jogged when Mark caught up with him
= 27 x 300
= 8100 m

Answer(s): (a) 18 min; (b) 8100 m