A #1/2# cup serving of soup has a total of #70# Calories, #10# of which are from fat. What percentage of the Calories are from fat?
Write the amount of calories as fat as a fraction of the total calories
To find the percentage,
It is not clear if the 10 is a count of calories or cups.
This is focused more on teaching and explaining percentage. So it is a bit long.
Percentage is basically a fraction. However it is a special fraction as the bottom number (denominator) is always fixed at 100.
There are two ways of writing percentage and they both mean EXACTLY the same thing.
Suppose we have the unknown percentage of
Another way of writing
So we have:
As these both mean the same thing then obviously
So when people write something like:
As a fraction of the whole this is
Multiply both sides by
So we have
Multiply by 1 and you do not change the value. However 1 comes in many forms.