Question 113028
A = alloy #1
B = alloy #2
{{{.28A + .6B = .52(A + B)}}}
{{{A + B = 80}}}
{{{.28A + .6(80 - A) = .52*80}}}
{{{.28A + 48 - .6A = 41.6}}}
{{{-.32A = -6.4}}}
{{{A = 20}}}grams of alloy #1
{{{B = 60}}}grams of alloy #2
check answer
{{{.28A + .6B = .52(A + B)}}}
{{{.28*20 + .6*60 = .52*80}}}
{{{5.6 + 36 = 41.6}}}
{{{41.6 = 41.6}}}
OK