A public library has fiction and nonfiction books in the ratio three colon two. If the library has three hundred sixty fiction books, how many nonfiction books does it have?

seventy-two

one hundred twenty

one hundred eighty

two hundred forty

Question

A public library has fiction and nonfiction books in the ratio three colon two. If the library has three hundred sixty  fiction books, how many nonfiction books does it have?

 seventy-two

 one hundred twenty

 one hundred eighty

 two hundred forty

calculusxy · Answer

3 : 2 is basically like $$\frac{ 3 }{ 2 }$$
That is like the base for the pattern of the problem really. 

The only way that I would solve this is to look at different numbers that would actually be working with the "base" to equal to 360 books for the library.