Solve this word problem

Question

You are shopping at a nutritional supplement store for whey protein. The original price of the protein is 39.99 dollars. You have a discount card that gives 20 percent off the purchase price. You also have a 10 dollar gift card that can be applied to your purchase. Which discount should be applied first to give you the best deal? State the lowest final price.

 

Thank you so much for reading and helping. I really appreciate it. :)

Answer 1

If you apply the discount first:

39.99(1-.20)-10

=39.99(.8)-10

=31.99-10

=21.99

 

If you apply the gift card first:

(39.99-10.00)(1-.20)

=(29.99)(.8)

=23.99

 

You should apply the 20% discount first.  The lowest final price is $21.99.