The price of a loaf of whole-wheat bread rose from $3.25 to $3.64. What was the percent increase in the price?
12 %
Typed answer in %, rounded to a whole number.
Answer
12 %
Rationale
A price increase is measured against the original price. Find how much the price went up, divide that amount by the original price of 3.25 dollars, and multiply by 100. Reporting only the dollar difference does not answer a question that asks for a percent.
Worked solution: Percent change = (new − old) ÷ old × 100 = (3.64 − 3.25) ÷ 3.25 × 100 = 12%.
RememberFor a price change, divide the dollar change by the original price, then multiply by 100.
Sources
Guide for theNational Institute of Standards and Technology · License: US government work (public domain) · Retrieved · Page 32
Lesson 3: Measures of Risk (Source: CDC)Centers for Disease Control and Prevention (CDC) · License: CDC content (credit required) · Retrieved · Vaccine efficacy or vaccine effectiveness
DOE-HDBK-1014/1-92U.S. Department of Energy · License: US government work (public domain) · Retrieved · Page 80
State Operations ManualCenters for Medicare & Medicaid Services · License: US government work (public domain) · Retrieved · Page 401
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