Step 1
We will, first of all, convert the percentage to a decimal. 30% can be expressed as;
[tex]\frac{30}{100}=\frac{3}{10}=0.3[/tex]To find the amount of alcohol, we will multiply 0.3 by the 15 quarts of No-freeze.
[tex]0.3\times15=4.5\text{ quarts of alcohol}[/tex]Answer; There are 4.5 quarts of alcohol in 15 quarts of the No-freeze antifreeze mixture.
4.5 quarts of alcohol
