Question

fill in the blank to make the two fractions equivalent.
$\frac{square}{40}=\frac{7}{8}$

Explanation:

Step1: Set up proportion

Let the number in the blank be $x$. We have the proportion $\frac{x}{40}=\frac{7}{8}$.

Step2: Cross - multiply

$8x = 7\times40$.

Step3: Calculate the right - hand side

$7\times40 = 280$, so $8x=280$.

Step4: Solve for $x$

$x=\frac{280}{8}=35$.

Answer:

35