## A teacher had 12 purple pens if the ratio of purple pens to blue pens she owned was 4:1 how many pens did she have total?

Question

Lost your password? Please enter your email address. You will receive a link and will create a new password via email.

## Answers ( )

Answer:15

Step-by-step explanation:Using cross multiplication, this is what I came up with:

x

Or, 4x=12.

To make x be on it’s own, we will divide 12 by 4, therefore removing the 4 from the right side of the equation. Since x = 3, we add that number to the total of purple pens, giving us a total of 15.

12 purple pens = 4 parts

1 part = 12/4 = 3

4 parts purple + 1 part blue = 5 parts

3 x 5 = 15