Question

Every week for 20 weeks, Kathy earned $15 for mowing lawns and \$35 for delivering newspapers. At the end of 20 weeks, she stopped mowing lawns and delivering newspapers and spent $300. She didn't earn or spend any money besides what is described here.

Write a numerical expression with parentheses for the amount of money Kathy has left.
Do not simplify your expression.

Answer 1

Explanation:

Each week, Kathy earned $15 for mowing lawns and $35 for delivering newspapers. In other words, she earned $50 per week.

The amount of money she had after 20 weeks was

($15/wk + $30/wk)(20 wks) - $300