A shopper buys $150 in groceries. The sales tax at the bottom of the receipt says they paid $10.50 in sales tax. What was the sales tax on that purchase?

Question

Quizplus · Accepted Answer

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 groceries before the tax is applied was $150 Part: the value of the added sales tax $10.50 %: this is what we are looking for, so this is where we will put our variable (x). ^part⁄_whole = ^%⁄₁₀₀ ^10.50⁄₁₅₀ = ^x⁄₁₀₀ Cross multiply and solve for x: ^10.50⁄₁₅₀ = ^x⁄₁₀₀ 150 * x = 10.5 * 100 150x = 1,050 150x/150 = 1,050/150 x = 7 So, $10.50 is 7% of $150.

A Shopper Buys $150 in Groceries