Weekly Problem 47 - 2010
The difference between $\frac{1}{3}$ and $\frac{1}{5}$
is $\frac{1}{3}-\frac{1}{5}= \frac{2}{15}$.
This section of the number line is divided into $16$
intervals, each of length $\frac{2}{15}\div 16 =
\frac{1}{120}$.
The difference between $\frac{1}{4}$ and $\frac{1}{5}$
is $\frac{1}{4}-\frac{1}{5}= \frac{1}{20}= \frac{6}{120}$, and
hence $\frac{1}{4}$is six smaller intervals
from $\frac{1}{5}$.
