Question 1071548
Account for the money:
{{{0.05n+0.1d=1.85}}}
{{{n+2d=37}}}


Coin count description:
{{{n=d+7}}}


Substitute for n in the money account, simplified, equation.
{{{d+7+2d=37}}}
{{{3d=30}}}
{{{highlight(d=10)}}}


{{{highlight(n=17)}}}