Question 898757
a+b=220,
0.3*a+0.2*b=0.23*220
a=220-b
0.3*(220-b)+0.2*b=50.6
66-0.3b+0.2*b=50.6
-0.1*b=-15.4
b=154
a=220-b
a=66 b=154