14. Michael keeps dogs, cows, cats and kangaroos as pets. He has 24 pets in total and $\frac{1}{8}$ of them are dogs, $\frac{3}{4}$ are not cows and $\frac{2}{3}$ are not cats. How many kangaroos does Michael keep?
A 4
B 5
C 6
D 7
E 8
14. D Michael has 24 pets. Since $\frac{1}{8}$ of them are dogs, he has 3 dogs. Since $\frac{3}{4}$ are not cows, $\frac{1}{4}$ of them are cows and hence he has 6 cows. Similarly, since $\frac{2}{3}$ are not cats, $\frac{1}{3}$ of them are cats and hence he has 8 cats. Therefore, the number of kangaroos he has is $24-3-6-8=7$.