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

20 (15+35)-300=? Dollars left

Answer 2

The expression is :
`20(15+35)-300`

Explanation:

Every week for 20 weeks, Kathy earned $15 for mowing lawns and $35 for delivering newspapers.

In 20 weeks, the earnings from mowing lawns will be =
`15*20`

In 20 weeks, the earnings from delivering newspaper will be =
`35*20`

At the end of 20 weeks she spent $300 and was left with :

`(15*20+35*20)-300` dollars

Or can be written as :
`20(15+35)-300` dollars

This is the expression to solve the problem.