Question 387845
Let A be the amount of walnuts and B the amount of almonds.
1.{{{A+B=120}}}
.
.
{{{225A+240B=120(230)}}}
2.{{{15A+16B=1840}}}
Multiply eq. 1 by (-15) and add to eq. 2,
{{{-15A-15B+15A+16B=-1800+1840}}}
{{{highlight(B=40)}}}lbs
Then from eq. 1,
{{{A+40=120}}}
{{{highlight(A=80)}}}lbs