Question 935623
1.{{{(GM+GP+GK)/9=28}}}
2.{{{GK/7=15}}}
3.{{{GP=GM+3}}}
From eq. 2,
{{{GK=105}}}
Substitute this and eq. 3 into eq. 1,
{{{(GM+GM+3+105)/9=28}}}
{{{2GM+108=252}}}
{{{2GM=144}}}
{{{GM=72}}}
So then,
{{{GP=72+3}}}
{{{GP=75}}}