4y + x = 12, 2x = 24 - 8y Solve by Substitution
1 answer:
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Answer: 112 oz
First we have to work with the same units. According to the International System of Units (SI), the Liter (L) is the unit of measurement for liquids, however, we are going to use the ounce (oz) in this case, as it is the unit of measure of the juice that Katie's baby sister drinks.
In addition:
(1)
(2)
(3)
Knowing this, we can calculate how much of apple juice is left for the baby after Katie drank a portion.
In order to do this, we have to substract the amount of juice Katie drank () to the total amount of juice in the full gallon (
):
This means that there are left for Katie’s baby sister.
In addition, taking into account the baby drinks each day, the
left are equivalent to approximately 28 days.