Answer
81 pounds of raisins
Work Step by Step
Set up a ratio comparing the amount of raisins and peanuts in the recipe to the amount of raisins and peanuts needed for the fundraiser. Let x be the unknown amount of raisins.
$\frac{3}{2}=\frac{x}{54}\longrightarrow$ cross multiply
$2x=3\times54\longrightarrow$ multiply
$2x=162\longrightarrow$ divide both side by 2
$2x\div2=162\div2\longrightarrow$ simplify
$x=81$