Question

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

Answer 1

`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:

`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?

`3/4 (12)-3=4-3=1`