Eric and David started jogging from the same point. David started jogging 7 minutes earlier than Eric. Eric's jogging speed was 400 m/min and David'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 Eric to catch up with David? 
2. What distance would David have jogged when Eric caught up with him?  Express your answer in meters.

	Eric	David
Speed	400 m/min	350 m/min
Start time		7 min earlier
Extra distance covered at first		2450 m

(a)
Distance that David covered when he jogged 7 minutes earlier
= 7 x 350
= 2450 m

Distance that Eric covered more than David per min
= 400 - 350
= 50 m

Time that Eric needed to take to cover the additional 2450 m
= 2450 ÷ 50
= 49 min

(b)
Time that David would had jogged when Eric caught up with him
= 49 + 7
= 56 min

Distance that David would have jogged when Eric caught up with him
= 56 x 350
= 19600 m

Answer(s): (a) 49 min; (b) 19600 m