Critical thinking math

Question

A faucet leaks 1 oz of water per minute. If water costs $11.20 per 1000 gal, how much additional money is being spent on the water bill.

Answer 1

You have the two rates: 1 oz/minute and $11.20/ 1000 gal.

We also know that: 128 ounces = 1 gallon.

We will assume the time frame of 30 days, since this is how often water meters are read. We will have to convert this to minutes. We will use these to cross-multiply and find out how much is spent on water.

30 days (24 hours/1 day) (60 minutes/ hour)(1 ounce/ 1 minute)(1 gallon / 128 ounces)($11.20/ 1000 gallon) = $3.78.

The household is spending an additional $3.78 per 30-day cycle.

Let me know if you need any further explanation of this problem.