Question 1087019
1.{{{D+Q=53}}}
and
{{{10D+25Q=1115}}}
2.{{{2D+5Q=223}}}
From 1,
{{{2D+2Q=106}}}
Subtract this from 2,
{{{2D+5Q-2D-2Q=223-106}}}
{{{3Q=117}}}
Solve for Q then use either equation to solve for D.