Which of the following numbers is less than $\frac{1}{20}$ ?
(A) $\frac{1}{15}$
(B) $\frac{1}{25}$
(C) 0.5
(D) 0.055
(E) $\frac{1}{10}$
If $0\frac{1}{20}$. Therefore, $\frac{1}{15}>\frac{1}{20}$ and $\frac{1}{10}>\frac{1}{20}$.

Also, $\frac{1}{20}=0.05$ which is less than both 0.5 and 0.055 .

Lastly, $\frac{1}{20}>\frac{1}{25}$ since $0<20<25$.

Therefore, $\frac{1}{25}$ is the only one of the choices that is less than $\frac{1}{20}$.

ANswer: (B)