Your doctor told you to eat 25 grams of fiber each day. you had 6 grams of fiber for breakfast. what percent of the 25 grams of fiber have you eaten so far?

You have eaten 24% of the fiber you need.

Explanation:
From this word problem we know that we must find what percent 6 is of 25. To do this, we can set up a proportion.

x4
6 n
--- = ---
25 100%
x4

Our objective is n, meaning we are solving for n. As we can notice, to get from 25 to 100, we multiply by 4 (100/25=4). We must do the same thing to 6, meaning we must multiply 4 by 6. 4 x 6 = 24, therefore the answer is 24%.