Final answer:
Chrissy spent a total of 8/15 of her money on art supplies, after purchasing both paint and paper.
Step-by-step explanation:
Chrissy spent 1/5 of her money on paint and 1/3 of her money on paper. To find out the total fraction of the money she spent, we need to add these fractions together. Since the denominators are different, we find a common denominator which would be 15. So, converting each fraction to have a denominator of 15, we get:
Adding these together, we have 3/15 + 5/15 = 8/15. Therefore, Chrissy spent 8/15 of her money on art supplies.