How many grams of dietary fiber do you need daily?

Question

One serving of oatmeal provides 16% of the dietary fiber you need daily. You need to get the remaining 21 grams of dietary fiber from other sources.

Answer 1

This looks like a cross multiplication problem to me. Where you are provided 3 of the 4 answers.

You are told 16% of daily fiber comes from oatmeal; that leaves 84% representing 21 grams of fiber. So.......

.84 .16

---- = ------

21 X

Cross multiply .84(x) = .16(21) Then solve for X by dividing both sides by .84

x = 4 grams of fiber (this is the amount in the oatmeal)

Add that to the other 21 grams and you will see the daily requirement for fiber is 25 grams.