Mark and Vincent started jogging from the same point. Vincent started jogging 4 minutes earlier than Mark. Mark's jogging speed was 450 m/min and Vincent's jogging speed was 150 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 Vincent? 
2. What distance would Vincent have jogged when Mark caught up with him?  Express your answer in meters.

	Mark	Vincent
Speed	450 m/min	150 m/min
Start time		4 min earlier
Extra distance covered at first		600 m

(a)
Distance that Vincent covered when he jogged 4 minutes earlier
= 4 x 150
= 600 m

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

Time that Mark needed to take to cover the additional 600 m
= 600 ÷ 300
= 2 min

(b)
Time that Vincent would had jogged when Mark caught up with him
= 2 + 4
= 6 min

Distance that Vincent would have jogged when Mark caught up with him
= 6 x 150
= 900 m

Answer(s): (a) 2 min; (b) 900 m