Cody has 30 C.D.s of Mrs.Cormier singing her favorite Rap songs. this 12% of his entire collection. how many cds does cody own? round final answer to the nearest whole number if necessary

Answer 1

Use the basic percent proportion;

part %

------- = -------

whole 100

Where the part is 30, the whole is unknown (I'll use x), and the percent is 12.

30 12

--- = ----

x 100

Cross multiply

12x = 3000

Divide both sides by 12 to get

x = 250 CDs