Question

Liam’s bookstore sold 40 notebooks and 20 newspapers for a total of $130. A day later the bookstore sold 8 botebooks and 4 newspapers at the same prices for a total of $28. How much dose a notebook and a newspaper cost

Answer 1

You can set up a system to solve this question.

`\left \{ {{40x+20y=130} \atop {8x+4y=28}} \right.`