# Keiko sold 3 less than three-fourths of his sister's sales. Which expression represents what Keiko sold?

$\frac{3}{4} S - 3$

#### Explanation:

It looks like we're missing the choices, but let's develop an expression ourselves.

Let's set $S$ to be the amount that Keiko's Sister sold. We're told that Keiko sold 3 less than three-fourths of his sister's sales.

We can express this as:

$\frac{3}{4} S - 3$

And let's test it with some real numbers. Let's say Keiko's Sister sold 12 things. How many would Keiko have sold?

$\frac{3}{4} \left(12\right) - 3 = 4 - 3 = 1$