At the beginning of the month, a rain barrel contained 12 ounces of water. At the end of the month there are 8 1/4 cups of water in the rain barrel.

How many cups of rain water were added to the barrel during the month?

The cups of rain water that were added to the barrel during the month is:

6.75 cups.

Step-by-step explanation:

First, you must know the conversion units between ounces and cups:

1 cup = 8 ounces.

Then, at the beginning of the month, the rain barrel contained 12 ounces, what is in cups:

1 cup = 8 ounces. X = 12 onces.

We operate:

X = (12 * 1) / 8 X = 1.5 cups

Now, how at the end of the month there are 8 1/4 cups of water in the rain barrel, in a decimal number it is equal to:

8 1/4 cups = 8.25 cups

To know what is the cups of rainwater were added to the barrel during the month, you must subtract the number of cups at the beginning of the month to the number of cups at the end of the month:

Cups of rainwater that were added = 8.25 cups - 1.5 cups Cups of rainwater that were added = 6.75 cups.