Answer
$\frac{1}{5}=\frac{8}{40}$
Work Step by Step
x is to y is the same as $\frac{x}{y}$
So 1 raisin is to 5 cornflakes as 8 raisins is to 40 cornflakes is the same as $\frac{1}{5}=\frac{8}{40}$
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