Represent proportional relationships by equations. For example, if total cost t is proportional to the number n of items purchased at a constant price p, the relationship between the total cost and the number of items can be expressed as t = pn.
Use proportional relationships to solve multistep ratio and percent problems. Examples: simple interest, tax, markups and markdowns, gratuities and commissions, fees, percent increase and decrease, percent error.
Compute unit rates associated with ratios of fractions, including ratios of lengths, areas and other quantities measured in like or different units. For example, if a person walks 1/2 mile in each 1/4 hour, compute the unit rate as the complex fraction 1/2/1/4 miles per hour, equivalently 2 miles per hour.
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6 questions
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1
60 sec
7.RP.A.2.b
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60 sec
7.RP.A.2.c
Q.
A store owner paid $$\$15$$ for a book. She marked up the price of the book by $40\%$ to determine its selling price.
What is the selling price, in dollars, of the book?
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