Sales tax amount = ________
4.32
$4.32 is what percent of the original amount? This can be determined using the proportion formula:
(original amount) / 100 = sales tax amount / $4.32
Substitute the given amounts into the formula:
54 / 100 = 4.32 / $4.32
Solve for the original amount:
original amount = (54 * 4.32) / 100
original amount = $2.33
Therefore, the store charged Sofie a sales tax rate of 8% 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?Using the information give, choose the best answer.
original amount = ________
54
45
39.68
1 answer