To find out how many loads of laundry Heather can complete with the carton of detergent, you need to divide the total ounces of detergent by the amount of detergent used per load.
Heather has 195 ounces of detergent, and each load uses 2.5 ounces (which is the same as \(2 \frac{1}{2}\) ounces).
Now, perform the division:
\[ \text{Number of loads} = \frac{\text{Total ounces}}{\text{Ounces per load}} = \frac{195}{2.5} \]
To make the division easier, you can convert 2.5 to a fraction:
\[ 2.5 = \frac{25}{10} = \frac{5}{2} \]
So now the calculation becomes:
\[ \frac{195}{2.5} = 195 \div 2.5 = 195 \times \frac{2}{5} = \frac{195 \times 2}{5} = \frac{390}{5} = 78 \]
Therefore, Heather can complete 78 loads of laundry with one carton of detergent.
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