Question 901622
x+y=100,
0.02*x+0.16*y=0.07*100
0.02*x+0.16*y=7
x=100-y
0.02*(100-y)+0.16*y=7
2-0.02y+0.16*y=7
0.14*y=5
y=35.7142857 at 16%
x=100-y
x=64.2857143 at 2%
check
0.02*64.2857143+0.16*35.7142857=0.07*100
1.28571429+5.71428571=7
7.0=7
ok