You purchase a shirt for $25.00 . you have a coupon for 20% off. sales tax is 7.5% . a) what is the amount of the discount on the shirt? show your work b) what is the sales price of the shirt? show your work c) what is the tax on the shirt after the discount? show your work d) what is the final price of the shirt? show your work

a. $5

b. $20

c. $1.50

d. $21.50

Step-by-step explanation:

A percent is a portion of 100. If $25 is 100% of the price, and we receive 20% off then we pay 80% of the price. 100%-20%=80%. We find the new price by multiplying 25 by the percent as a decimal. 80% is 0.80.

25(0.80)=$20. The discount is $5 off.

We add tax by using the percent as we did above. Instead of calculating how much we will pay after the discount, we calculate how much the tax percent is in dollars. We take 7.5% and convert to decimal 0.075. We multiply by the price we pay $20.

0.075(20)=$1.50.

We add $1.50 to our total of $20 to pay $21.50.

answer: $34.31

step-by-step explanation:

$11.99 x 3 = $35.97

$35.97 - 10% = $32.37

$32.37 + 6% = $34.31

answer: c.  

step-by-step explanation:

mixtures containing substances that get attracted to magnet can be separated using a magnet. we can separate iron from a mixture of sand and iron, as only iron attracts to the magnet.