Question

The recommended daily allowance of niacin for adults is 20 mg. One serving of a certain breakfast cereal provides 8 mg of niacin, What percent of the recommendeddaily allowance of niacin does one serving of this cereal provide?

Answer 1

Given:

Total allowance = 20mg.

Used = 8 mg

Percentage of daily allowance is:

`\begin{gathered} =(8)/(20)*100 \\ =(8)/(2)*10 \\ =8*5 \\ =40 \end{gathered}`

So 40% daily allowance .