Treasure Hunt: How to Find Tax and Discount Using Percent of a Number
TL;DR: Two of the most useful percent skills you’ll ever use as a shopper: tax and discount. For tax, multiply the price by the tax rate as a decimal and add it to the original, so $50 at 8% tax becomes $50 plus ($50 times 0.08), which is $54. For a discount, multiply by the […]
Jungle Bargains: A Guide How to Find the Original Price Using Sale Prices
To find an original price from a sale price, divide by the complement of the discount rather than adding the percentage back, because the percentage was taken from the larger number. The examples below show why that distinction matters, with practice problems. On our expedition today, we’re not just searching for ancient artifacts or rare […]
