alleryStart learning →What number is 45% of 80?
A45
B36
C3.6
D56
Answer & Solution
Correct answer: B. 36
1. Translate the sentence: of means multiply and is means equals, so n = 0.45 times 80.
2. Multiply: 0.45 times 80 equals 36.
3. Check: 45% is a bit less than half, and 36 is a bit less than half of 80, so the answer makes sense.
4. 3.6 comes from misplacing the decimal point one spot, the classic percent trap.
_Source: OpenStax Elementary Algebra (CC BY 4.0), Ch 3 "Math Models", section 3.2 Solve Percent Applications_
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