When you see a problem, first of all, you should judge whether the problem is a percentage problem or not, and whether to find the percentage of a numerical value, for example:

What is 80% of 120?

If X is 1/3 of Y and Y is 120% of Z, what percentage of Z is X?

15x is a percentage of 12y, expressed by x and y?

Rephrase your question.

No matter how complicated this percentage problem is, its core is a simple and basic problem, which looks like this:

_ _ _ _ _ is _ _ _ _ percent of _ _ _ _?

Sometimes it is written in this form:

What is 80% of 120?

Sometimes you need to adjust the word order slightly:

What percentage of x is z?

12y is what percentage of 15x?

If you are not sure, look for "of", and this kind of problem will always appear.

Turn it into mathematical language.

Turn your questions from left to right into mathematical language. I like to use w at the end of the equation, for example:

w = 80/ 100 * 120

z = w/ 100 * x

12y = w/ 100 * 15x

You can also express your own questions according to your own habits.

Calculate w

W is the problem you need to solve, just solve it by algebraic method ~ it may only take a simple step, such as

w = (80/ 100) * 120

w = 96

You may also need to use other equations to calculate, such as

x = ( 1/3)y

y = ( 120/ 100)z

w = 100 z/(( 1/3)y)= 300 z/y

w = 300 z/(( 120/ 100)z)= 300/( 120/ 100)

w = 250

When you encounter difficult and complicated problems, try to write them out and solve them step by step!