#### Answer

a) $\frac{15}{37}$ are watercolor paintings
b) $\frac{17}{37}$ are oil paintings
c) 5 are sculptures
d) $\frac{5}{37}$ are sculptures

#### Work Step by Step

a) $\frac{part}{whole} \Rightarrow \frac{15}{37}$
b) $\frac{part}{whole} \Rightarrow \frac{17}{37}$
c) $37-15-17=22-17=5$
d) $\frac{part}{whole} \Rightarrow \frac{55}{37}$