i bought 5 cookies for 2.90. i paid with a 20$. how many dollars did i get back?

Answer 1

if you take the number of cookies and multiply by the cost of each cookie,

5 cookies * $2.90 = $14.50

Now Subtract the change,

$20.00 - $14.50 = $5.50

so, you will receive 5 dollars and 50 cents.