Solve multi-step percent problems in context using proportional reasoning, including simple interest, tax, gratuities, commissions, fees, markups and markdowns, percent increase, and percent decrease. [Grade 7, 3]

Example Problems
An estimated 3 out of every 25 men are left-handed.
What percent of men are left-handed?
In a cookie jar, 8 out of the 20 cookies have chocolate chips.
What percentage of the cookies have chocolate chips?
In our solar system, 6 of the 8 planets have moons.
What percentage of the planets have moons?
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