Mike paid $13 for three books Diego bought 12 books price at the same rate how much did Diego pay for 12 bucks explain your reasoning

Diego paid $52 for 12 books.

Step-by-step explanation:

If Mike bought 3 books for $13 that means that a book cost him $ 4.33

$ 13/3 = $ 4.33

And if Diego bought 12 books for the same price, how much did it cost?

An equation called "Rule of 3" is used:

1 book = $ 4.33

12 books = X

The X of the equation is cleared:

X = (12 books * $ 4.33) / 1

X = $ 52 for the 12 books Diego bought.

Well 13 / 3 = 4.3333, that sure the cost for one book and the rate. so if he bought 12 books at the same rate, then its 12*4.33333. which equals 52 dollars