Question

Find the discount if a $69.99 item is on sale for $39.99

Answer 1

If you wanna find the discount the only thing you should do is to say:
69.99 - 39.99 = $30 :)))
I hope this is helpful
have a nice day 

Answer 2

ok so discount is how much you have to minus from the original to get the sale price
69.99=original
39.99=sale price
so
origial-discount=sale
69.99-discount=39.99
subtract 69.99 from both sides
-discount=-30
multiply by -1
discount=30

answer is $30.00