Kelly is having a party and wants to fill her hot tub. If she uses the red hose alone it takes 12 hours longer (more) than if she uses the green hose alone. When she uses both hoses, the hot tub fills in 8 hours. How long does it take for one hose to fill the hot tub? It takes ? hours using the red hose alone. It takes ? hours using the green hose alone.
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