Sean and David started jogging from the same point. David started jogging 7 minutes earlier than Sean. Sean's jogging speed was 250 m/min and David's jogging speed was 200 m/min. They went in the same direction and did not change their speeds throughout.

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

	Sean	David
Speed	250 m/min	200 m/min
Start time		7 min earlier
Extra distance covered at first		1400 m

(a)
Distance that David covered when he jogged 7 minutes earlier
= 7 x 200
= 1400 m

Distance that Sean covered more than David per min
= 250 - 200
= 50 m

Time that Sean needed to take to cover the additional 1400 m
= 1400 ÷ 50
= 28 min

(b)
Time that David would had jogged when Sean caught up with him
= 28 + 7
= 35 min

Distance that David would have jogged when Sean caught up with him
= 35 x 200
= 7000 m

Answer(s): (a) 28 min; (b) 7000 m