Lesson 5: Use Percent to Solve Problems6.AT.4

I can…

I can solve problems involving discounts, markups, tax, and tips using percents.

Key words

• Discount — Money taken off the first price to make it cheaper.
• Markup — Money added to the cost to set the selling price.
• Tax — Extra money added to a price for the government.
• Tip — Extra money you give for good service.
• Percent — A way to compare a number to 100, shown with the % sign.

Steps

1. A bear costs 200 tickets, 25% off, then a 5% tax is added.
2. First the discount: 0.25 × 200 = 50 off, so the price is 200 − 50 = 150.
3. Then the tax on the new price: 0.05 × 150 = 7.5.
4. I add it on: 150 + 7.5 = 157.5 tickets is the final price.

Try it

A jacket costs $80 and is 35% off. Sales tax is 5%. What is the final price?

Check your answer

$54.60

Discount: 0.35 × $80 = $28. Sale price: $80 − $28 = $52. Tax: 0.05 × $52 = $2.60. Final: $52 + $2.60 = $54.60.

Sentence starter

I know ___ because ___.

Goal: I can explain my solution using the words discount, markup, tax, tip, and percent.