20%, and Reed has a coupon for an additional 10% off of the sale price.

If the original cost of the tent was $175, what does Reed pay?

You would take 175 and multiply it by 0.20 which is 35. The you would subtract 35 from 175 because it is marked down so you would get 140. Next, you would take 140 and multiply it by 0.10 and get 14. Finally subtract 14 from 140 to get your answer which would be $126.