Question

Find the percent discount..
regular price: $49
sale price: $39

Answer 1

\[\% \Delta = \frac{|a-b|}{a} \times 100\]

a = original price
b = sale price

Answer 2

\[\% \Delta = \frac{49- 39}{39} \times 100\]

Answer 3

\[\% \Delta = \frac{10}{39} \times 100\]

Answer 4

\[\% \Delta = \frac{1000}{39} = 25.641\approx 26\]

Answer 5

approximately 26% change