Rounded to the nearest tenth of a percent, what is 5/7 written as a percent?
A70.4%
B71.4%
C71.5%
D57.1%
Answer & Solution
Correct answer: B. 71.4%
1. Convert 5/7 to a decimal by dividing 5 by 7, which gives 0.714285... repeating.
2. Rounding to the nearest thousandth gives 0.714.
3. Move the decimal point two places to the right and add the percent sign: 71.4%.
4. So 5/7 rounds to 71.4%, not 70.4% or 71.5%, which come from rounding the wrong digit, and not 57.1%, which swaps the digits of the fraction itself.
_Source: OpenStax Prealgebra (CC BY 4.0), Ch 6 "Percents", section 6.1 Understand Percent_
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