Patricia has 4 barrels of 7 gallons each. All of them are empty, and there's only one faucet with a flow rate of 3.5 gallons per minute. How many minutes will it take to fill all 4 barrels?
Thoughts? Step-by-step reasoning:
If Patricia has 4 barrels and each barrel has 7 gallons, then in total she needs 4 * 7 = 28 gallons. If the faucet can provide 3.5 gallons every minute, then she will need 28 / 3.5 = 8 minutes to fill all 4 barrels.
Thus, the answer is 8.