Katarina made 6 book covers in each color: red, green, yellow, and purple. She gave 5 book covers to each of her 3 best friends, then she gave 2 book covers to her cousin. How many book covers does Katarina have now?

Answer 1

6 * 4 = 24 book covers

3 * 5 = 15

24 - 15 - 2 = ?