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Percents, fractions, and decimals
Percent of a number
Adding and multiplying percents
Taxes, discounts, tips and more
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(Original price) + [(Original price) ×\times× (tax/tip in percent)] = (New price)
(Original price) ×\times× [1+ (tax/tip percent in decimal)] = (New price)
(Original price) - [(Original price) ×\times× (discount in percent)] = (New price)
(Original price) ×\times× (1 - discount percent in decimal) = (New price)
A pack of potato chips is priced at $5. If the sales tax in the province is 15%, how much should the potato chips be sold for?
A family of three went to a five-star restaurant for dinner. The bill for the meal was $180. The family put down $300 and left without asking for changes. In other words, what is the percentage of tips they have paid?
A stationary store is having a garage sale. All the binders priced at $12 are now on sale for $9. What is the discount percentage?
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