One serving of rice cereal has 190 mg of sodium, which is 8% of the recommended daily amount. What is the total recommended daily amount of sodium?
A1,520 mg
B2,975 mg
C15,200 mg
D2,375 mg
Answer & Solution
Correct answer: D. 2,375 mg
1. Change 8% to a decimal: 0.08.
2. Since 190 mg is 0.08 times the total, divide 190 by 0.08 to undo the multiplication.
3. 190 divided by 0.08 equals 2,375.
4. So the recommended daily amount is 2,375 mg.
5. 1,520 mg comes from multiplying 190 by 8 instead of dividing by 0.08, which shrinks the answer by a factor of 100 divided by 64.
_Source: OpenStax Prealgebra (CC BY 4.0), Ch 6 "Percents", section 6.2 Solve General Applications of Percent_
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