Question

Martina bought 4 CDs that were each the same price. Including sales tax, she paid a total of $70.40 . Each CD had a tax of $ 1.10 . What was the price of each CD before tax?

Answer 1

$1.10 \times 4 = 4.40$

$70.40 - 4.40 = 66$

$66 \div 4 = 16.5$

Each CD was $16.50 before tax

Proof

$total \: cost = 16.5(4) + 1.10(4)$

$total \: cost = 66 + 4.40$

$total \: cost = 70.40$