Our library has 150 statistics books, which is 30% of the total number of books in the library. How many total books we have in the library?

Question

I am looking for a way to solve the question on this

Answer 1

Hi Dara,

 

For Percent questions, I recommend you memorize 1 formula:

     Part = Percent X Whole

This can be used to find the Part, the Whole, or the Percent.  Just make sure you set up your equation correctly, and remember that % means /100 (so 30% = .3).

 

Let's put this to work on your problem.  We know the Part and the Percent; we need the Whole (I'll use T). So...

    150 = 30% X T

    150 = .3T

    500 = T

 

I hope that helps you with any Percent problem you face.

 

Paul L.