The number of minutes it would take for the two pools to have the same amount of water is 135 minutes.
The equation that represents the amount of water in the pool filled by Roger is: 2500 + 5m
The equation that represents the amount of water in the pool drained by Maria is: 5200 - 15m
When the two pools have the same amount of water, the two above equations would be equal:
2500 + 5m = 5200 - 15m
Combine similar terms
5m + 15m = 5200 - 2500
Add similar terms
20m = 2700
Divide both sides by 20
m = 135
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