Murphy and Belle run along a road, starting 500 meters away from each other. If they run in opposite directions, how long does it take for them to be 5000 m away from each other, given that Murphy runs at 200 m per minute and Belle runs at 300 m per min ?
2 Answers
It takes
Explanation:
You can solve this problem with logic.
Every minute they run, they increase the distance between themselves by 500 meters.
When they begin, they are already
They add
Check
Distance apart at the start . . . . .. . . .
...................................................................................................
Distance apart after
9 minutes.
Explanation:
Distance = Rate * Time
5000 - 500 = 4500 m => distance to go
Since they are running in opposite direction their speed can be combined:
Rate = 300 + 200 = 500 mpm
Time = Distance/Rate
Time = 4500/500 = 9 minutes