Percent Increase, Decrease, and Discount

(The amount of increase) = (% Increase) · (The Initial Tuition)

Note: $26.00  - $20.00 = $6.00 The amount of increase!

Therefore: \(6 = x \cdot 20\)

\(\frac{6}{20} = \frac{20x}{20}\)

\(0.3 = x\)

\(x=0.3 = 30\%\)

30% Increase.

(The amount of decrease) = (% Decrease) · (The Initial salary)

\(=(0.04) \cdot (53,500.00)\)

\(=2,140,00\) The amount of decrease!

The "New salary" = (Initial salary) - (The amount of decrease)

\(=53,500.00-2,140.00\)

\(=51,360.00\) New Salary.

(The amount of discount) = (Original price) - Discounted price)

\(=54.95 - 32.97\)

\(=21.98\) The amount of discount.

(The amount of discount) = (% Discount) · (Original price)

\(21.98 = x \cdot 54.95\)

\(\frac{21.98}{54.95} = \frac{<del>54.95</del>x}{<del>54.95</del>}\)

\(0.4 = x\)

\(40\% = x\)

So the percent discount is 40%.