John and Sean started jogging from the same point. Sean started jogging 7 minutes earlier than John. John's jogging speed was 300 m/min and Sean's jogging speed was 250 m/min. They went in the same direction and did not change their speeds throughout.

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

	John	Sean
Speed	300 m/min	250 m/min
Start time		7 min earlier
Extra distance covered at first		1750 m

(a)
Distance that Sean covered when he jogged 7 minutes earlier
= 7 x 250
= 1750 m

Distance that John covered more than Sean per min
= 300 - 250
= 50 m

Time that John needed to take to cover the additional 1750 m
= 1750 ÷ 50
= 35 min

(b)
Time that Sean would had jogged when John caught up with him
= 35 + 7
= 42 min

Distance that Sean would have jogged when John caught up with him
= 42 x 250
= 10500 m

Answer(s): (a) 35 min; (b) 10500 m