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#### Description:

This is a task from the Illustrative Mathematics website that is one part of a complete illustration of the standard to which it is aligned. Each task has at least one solution and some commentary that addresses important asects of the task and its potential use. Here are the first few lines of the commentary for this task: Anna enjoys dinner at a restaurant in Washington, D.C., where the sales tax on meals is 10%. She leaves a 15% tip on the price of her meal before the s...

#### Subjects:

• Mathematics > General
• Education > General

English

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Update Standards?

#### CCSS.Math.Content.6.RP.A.3c: Common Core State Standards for Mathematics

Find a percent of a quantity as a rate per 100 (e.g., 30% of a quantity means 30/100 times the quantity); solve problems involving finding the whole, given a part and the percent.

#### CCSS.Math.Content.7.RP.A.3: Common Core State Standards for Mathematics

Use proportional relationships to solve multistep ratio and percent problems.

#### CCSS.Math.Content.6.EE.A.3: Common Core State Standards for Mathematics

Apply the properties of operations to generate equivalent expressions.

#### CCSS.Math.Content.6.EE.B.7: Common Core State Standards for Mathematics

Solve real-world and mathematical problems by writing and solving equations of the form x + p = q and px = q for cases in which p, q and x are all nonnegative rational numbers.

#### CCSS.Math.Content.7.EE.B.3: Common Core State Standards for Mathematics

Solve multi-step real-life and mathematical problems posed with positive and negative rational numbers in any form (whole numbers, fractions, and decimals), using tools strategically. Apply properties of operations to calculate with numbers in any form; convert between forms as appropriate; and assess the reasonableness of answers using mental computation and estimation strategies.
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