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

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

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

Distance that John covered more than Oliver per min
= 400 - 350
= 50 m

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

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

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

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