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Percent Increase, Decrease, and Discount

Answers

  1. (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.

  2. (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.

  3. (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{54.95x}{54.95}
    0.4 = x
    40\% = x
    So the percent discount is 40%.