# Evie wants groups of 3 notebooks and 5 pens. She already has 12 notebooks. How many pens will she need?

##### 1 Answer

Mar 27, 2018

20 pens

#### Explanation:

She has four times the amount of notebooks as 1 group would have (1 group=3 notebooks, 5 pens). That means she also needs four times the amount of pens.

Another way to solve this would be to set up a proportion.