so Meg's friend is a faster reader, if Meg takes 3/5 of an hour I guess, to read one book, her friend takes 2/3 of that.
how much is 2/3 of 3/5? well, is just their product.
[tex]\bf \cfrac{3}{5}\cdot \cfrac{2}{3}\implies \cfrac{3}{3}\cdot \cfrac{2}{5}\implies 1\cdot \cfrac{2}{5}\implies \cfrac{2}{5}\impliedby \textit{for one book only} \\\\\\ \stackrel{first~book}{\cfrac{2}{5}}+\stackrel{second~book}{\cfrac{2}{5}}+\stackrel{third~book}{\cfrac{2}{5}}\implies \cfrac{6}{5}\implies 1\frac{1}{5}\impliedby \textit{for three books}[/tex]
