Problem preview

MF.PR.8 Standard MF-022-A06-V02

Use proportional reasoning to solve percent problems without relying on memorized templates alone.

Pick the percent proportion that fits

Problem

A backpack normally costs $\$64$, and the store takes $15\%$ off the original price. Evaluate these setups for modeling the dollar amount $x$ of the discount, report the valid setup, and calculate the discount amount.

A. $x/64~=~15/100$
B. $64/x~=~15/100$
C. $15/64~=~x/100$

Answer choices

Choose your path.

Preview only

Setup A: x/64 = 15/100, so the discount is $9.60.

Setup C: 15/64 = x/100, so x ≈ $23.44.

Setup B: 64/x = 15/100, so x ≈ $426.67.

Setup A: x/64 = 15/100, so the answer is $54.40.

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Curriculum context

Course: Math Foundations
Standard: MF.PR.8
Category: Proportional Reasoning
Domain: Percents
Objective: Use proportional reasoning to solve percent problems without relying on memorized templates alone.
Problem type: Pick the percent proportion that fits