A $40 item is 20% off. What is the sale price?

The sale price is $32. You save $8.

40 \times 0.8 = 32

How to work it out

1
The original price is $40 and the discount is 20%.
2
Method 1: find the discount, then subtract it.
$20\% \text{ of } 40 = 0.2 \times 40 = 8\qquad 40 - 8 = 32$
3
Method 2: you pay 80% of the price, so multiply by 0.8:
$40 \times 0.8 = 32$
4
Answer: the sale price is $32 and you save $8.

LaTeX source of the formulas on this page

\[ 40 \times 0.8 = 32 \]
\[ 20\% \text{ of } 40 = 0.2 \times 40 = 8\qquad 40 - 8 = 32 \]

What is 20% off $40?

The sale price is $32. You save $8.

How do I find the sale price quickly?

Multiply the price by 0.8 (that is 100% − 20%).