Charlie and Fred started jogging from the same point. Fred started jogging 4 minutes earlier than Charlie. Charlie's jogging speed was 250 m/min and Fred'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 Fred? 
2. What distance would Fred have jogged when Charlie caught up with him?  Express your answer in meters.

	Charlie	Fred
Speed	250 m/min	200 m/min
Start time		4 min earlier
Extra distance covered at first		800 m

(a)
Distance that Fred covered when he jogged 4 minutes earlier
= 4 x 200
= 800 m

Distance that Charlie covered more than Fred per min
= 250 - 200
= 50 m

Time that Charlie needed to take to cover the additional 800 m
= 800 ÷ 50
= 16 min

(b)
Time that Fred would had jogged when Charlie caught up with him
= 16 + 4
= 20 min

Distance that Fred would have jogged when Charlie caught up with him
= 20 x 200
= 4000 m

Answer(s): (a) 16 min; (b) 4000 m