60%x + $\frac{2}{3}x$ = $\frac{1}{3}:1\frac{5}{3}$
$\frac{3}{5}x+\frac{2}{3}x=\frac{1}{3}:\frac{8}{3}$
$x(\frac{3}{5}+\frac{2}{3})=\frac{1}{3}.\frac{3}{8}$
$x(\frac{9}{15}+\frac{10}{15})=\frac{1}{8}$
$\frac{19}{15}x=\frac{1}{8}$
$x=\frac{1}{8}:\frac{19}{15}$
$x=\frac{1}{8}.\frac{15}{19}$
$x=\frac{15}{152}$