Final answer:
To find out how many cards Della has if Max has 45, you can set up and solve an equation. Della has 225 Pokemon cards.
Step-by-step explanation:
To find out how many cards Della has if Max has 45, we need to write and solve an equation based on the given information. Since Max has 1/5 as many Pokemon cards as Della, we can say that Della has 5 times as many cards as Max. Let's represent the number of cards Della has as 'x'. We can set up the equation as follows:
5 * 45 = x
Simplifying the equation, we get:
x = 225
Therefore, Della has 225 Pokemon cards.