Answer:
A) (20, 0)
Step-by-step explanation:
Double the second equation and add that to the first:
(0.2x +0.5y) +2(-0.1x +0.3y) = (4) +2(-2)
1.1y = 0
y = 0
Substitute this value into either equation to find x.
0.2x +0.5·0 = 4
x = 4/0.2 = 20
The solution is (x, y) = (20, 0).
