A man shopping for fireworks wants to buy some Bang-snaps, which are buy one get 4 free. If they are normally sold for $1 each, what is the percent the man saves if he takes advantage of the sale?

Question

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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 fireworks before the discount is applied was (5 fireworks • $1/each = $5) Part: the savings from the discount were ($5 (what he would have spent) - $1 (what he did spend) = $4 (how much he saved)) %: this is what we are looking for, so this is where we will put our variable (x). ^part⁄_whole = ^%⁄₁₀₀ ⁴⁄₅ = ^x⁄₁₀₀ Cross multiply and solve for x: ⁴⁄₅ = ^x⁄₁₀₀ 5 • x = 4 • 100 5x = 400 5x ÷ 5 = 400 ÷ 5 x = 80 So, $4 is 80% of $5.

A Man Shopping for Fireworks Wants to Buy Some Bang-Snaps