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3 years ago

No freeze antifreeze mixture contains 30% alcohol.how many alcohol is there in 15 quarts of no freeze?

1 answer:

8 0

$\bf \begin{array}{|c|ll}
\cline{1-1}
\textit{a\% of b}\\
\cline{1-1}
\\
\left( \cfrac{a}{100} \right)\cdot b
\\\\
\cline{1-1}
\end{array}~\hspace{5em}\stackrel{\textit{30\% of 15}}{\left( \cfrac{30}{100} \right)15}\implies 4.5$

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