Question 898789
x+y=3000,
0.05*x+0.08*y=213
x=3000-y
0.05*(3000-y)+0.08*y=213
150-0.05y+0.08*y=213
0.03*y=63
y= 2100
x=3000-y
x=900
check
0.05*900+0.08*2100=213
45+168=213
213=213
ok