Notice that if we multiply the numerator and denominator by 2, we can write 3/8 like this:
[tex]\frac{3}{8}(\frac{2}{2})=\frac{6}{16}[/tex]then,since the woman walk 1/16 mile each time she goes to the bus stop, then we have the following:
[tex]\frac{6}{16}=6\cdot(\frac{1}{16})[/tex]therefore, the woman took the bus 6 times last month