David and Archie started jogging from the same point. Archie started jogging 2 minutes earlier than David. David's jogging speed was 450 m/min and Archie's jogging speed was 350 m/min. They went in the same direction and did not change their speeds throughout.

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

	David	Archie
Speed	450 m/min	350 m/min
Start time		2 min earlier
Extra distance covered at first		700 m

(a)
Distance that Archie covered when he jogged 2 minutes earlier
= 2 x 350
= 700 m

Distance that David covered more than Archie per min
= 450 - 350
= 100 m

Time that David needed to take to cover the additional 700 m
= 700 ÷ 100
= 7 min

(b)
Time that Archie would had jogged when David caught up with him
= 7 + 2
= 9 min

Distance that Archie would have jogged when David caught up with him
= 9 x 350
= 3150 m

Answer(s): (a) 7 min; (b) 3150 m