Amount of change = 4.32
Original amount = 54
Proportional formula: (Amount of change / Original amount) = (Percent change / 100)
Substitute the values: (4.32 / 54) = (Percent change / 100)
Cross multiply: Percent change = (4.32 * 100) / 54 = 800 / 54 ≈ 14.81%
Therefore, the store charged Sofie a sales tax rate of approximately 14.81% for her purchase.
Solve the percent change problem using the proportion formula. List the information given by each situation. Show the substitution into the proportional formula equation. State the final result in complete sentence using the appropriate unit.
Sofie was charged a $4.32 sales tax when she purchased a $54 pair of leggings. What sales tax rate did the store charge Sofie for her purchase?
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Using the information give, choose the best answer.
amount of change = ________
4.23
4.30
4.32
1 answer
1 answer