Billy and Bobby started jogging from the same point. Bobby started jogging 8 minutes earlier than Billy. Billy's jogging speed was 400 m/min and Bobby'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 Billy to catch up with Bobby? 
2. What distance would Bobby have jogged when Billy caught up with him?  Express your answer in meters.

	Billy	Bobby
Speed	400 m/min	200 m/min
Start time		8 min earlier
Extra distance covered at first		1600 m

(a)
Distance that Bobby covered when he jogged 8 minutes earlier
= 8 x 200
= 1600 m

Distance that Billy covered more than Bobby per min
= 400 - 200
= 200 m

Time that Billy needed to take to cover the additional 1600 m
= 1600 ÷ 200
= 8 min

(b)
Time that Bobby would had jogged when Billy caught up with him
= 8 + 8
= 16 min

Distance that Bobby would have jogged when Billy caught up with him
= 16 x 200
= 3200 m

Answer(s): (a) 8 min; (b) 3200 m