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

	Charlie	Oscar
Speed	400 m/min	200 m/min
Start time		7 min earlier
Extra distance covered at first		1400 m

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

Distance that Charlie covered more than Oscar per min
= 400 - 200
= 200 m

Time that Charlie needed to take to cover the additional 1400 m
= 1400 ÷ 200
= 7 min

(b)
Time that Oscar would had jogged when Charlie caught up with him
= 7 + 7
= 14 min

Distance that Oscar would have jogged when Charlie caught up with him
= 14 x 200
= 2800 m

Answer(s): (a) 7 min; (b) 2800 m