A customer purchases $21 of socks. Calculate the percent sales tax if they were charged an additional $1.47 in sales tax.

Question

Quizplus · Accepted Answer

In this problem, you are given the total value of the socks ($21) and then the additional tax paid ($1.47). We are looking for the sales tax percentage, or what percent $1.47 is of $21. We can use the percent formula to solve. The percent formula is below: ^part⁄_whole = ^%⁄₁₀₀ Based on the text, these are the values we will plug into the percent formula to solve: Whole: the original "whole" price of the socks before the tax is applied is $21 Part: the value of the added sales tax $1.47 %: this is what we are looking for, so this is where we will put our variable (x). ^part⁄_whole = ^%⁄₁₀₀ ^1.47⁄₂₁ = ^x⁄₁₀₀ Cross multiply and solve for x: ^1.47⁄₂₁ = ^x⁄₁₀₀ 21 * x = 1.47 * 100 21x = 147 21x/21 = 147/21 x = 7 So, $1.47 is 7% of $21.

A Customer Purchases $21 of Socks