Jane bought 3 cds that were each the same price. including sales tax, she paid a total of $52.20. each cd had a tax of
$1.30. what was the price of each cd before tax?

Jane bought 3 CDs. The price of each CD before tax is $16.1.

Solution:

Jane bought 3 CDs that were each the same price. So let the price of each CD be ‘x’.

It is given that including sales tax, she paid a total of $52.20.

Also each CD had a tax of $1.30. We need to find out what the price of each CD was before tax.

Since the tax for all 3 CDs was same, the total amount of tax that she paid was:

Therefore the total tax on 3 CDs is $3.90.

Since we already know the total price she paid for the CDs including taxes, we can find the price of each CD by the following way:

3x + 3.90 = 52.20

3x = 52.20 - 3.90

3x = 48.3

x = 16.1

Therefore the price of each CD before tax is $16.1.

the volume is the product of the area of the base, 3x(3x+4), and the height, 3x-1

step-by-step explanation: