Westonci.ca is your trusted source for finding answers to all your questions. Ask, explore, and learn with our expert community. Connect with professionals on our platform to receive accurate answers to your questions quickly and efficiently. Explore comprehensive solutions to your questions from knowledgeable professionals across various fields on our platform.

A 12-gallon tub has a faucet that lets water in at a rate of 3 gallons per minute, and a drain
that lets water out at a rate of 1.5 gallons per minute. If you start with 3 gallons of water
in the tub, how long will it take to fill the tub completely?


Sagot :

AL2006
3-in plus 1.5-out every minute means a net gain of 1.5 per minute. You need to fill (12 - 3) = 9 gallons. At 1.5 per minute, it takes 9/1.5 = 6 minutes if the drain and the faucet arr both open, but only (9/3)=3 minutes if you close the drain while you fill the tub.

Answer: 15

Step-by-step explanation: