One serving provides 3.2 milligrams of niacin to John.
Given: One serving provides 20% of the recommended daily allowance of niacin.
Recommended daily allowance is 16 milligrams
What is the percentage?
The percentage is the way of depicting a value concerning the one-hundredth part of any quantity. The symbol of percentage is %.
For example, 20% means 20 in the parts of 100. 20% means 20 / 100 or 0.20.
Now let’s solve the given problem.
Recommended daily allowance of niacin = 16 milligrams
One serving provides 20% of the daily allowance.
So, the number of milligrams provided by one serving is 20% of the recommended daily allowance of niacin.
= 20% of 16 milligrams
= 20 / 100 * 16 milligrams
= 0.20 * 16 milligrams
= 3.2 milligrams.
Therefore, the milligrams of niacin provided is 3.2 milligrams.
Hence, one serving provides 3.2 milligrams of niacin to John.
Know more about "percentage" here: brainly.com/question/13450942
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