Sean and Harry started jogging from the same point. Harry started jogging 2 minutes earlier than Sean. Sean's jogging speed was 300 m/min and Harry's jogging speed was 150 m/min. They went in the same direction and did not change their speeds throughout.
- How long did it take for Sean to catch up with Harry?
- What distance would Harry have jogged when Sean caught up with him? Express your answer in meters.
|
Sean |
Harry |
Speed |
300 m/min |
150 m/min |
Start time |
|
2 min earlier |
Extra distance covered at first |
|
300 m |
(a)
Distance that Harry covered when he jogged 2 minutes earlier
= 2 x 150
= 300 m
Distance that Sean covered more than Harry per min
= 300 - 150
= 150 m
Time that Sean needed to take to cover the additional 300 m
= 300 ÷ 150
= 2 min
(b)
Time that Harry would had jogged when Sean caught up with him
= 2 + 2
= 4 min
Distance that Harry would have jogged when Sean caught up with him
= 4 x 150
= 600 m
Answer(s): (a) 2 min; (b) 600 m