Find a percent of a quantity and interpret the result in context.
Find and interpret a contextual percent amount
Problem
\(\text{Twenty}~\text{percent}\) of the \(45\) students in a grade ride the bus to school. How many students ride the bus?
Big Picture
What this problem is really about
The whole is the forty-five students in the grade, and the percent describes the part who ride the bus. We’ll rewrite twenty percent as either a decimal multiplier or a benchmark fraction, apply it to the whole, and attach the result to students. Preserving the unit ensures the computed part is interpreted in the original context.
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