Question

simultaneously equation please solve it

Answer 1

0.2 X + 0. 1y =25
0.1(2 X + Y) = 25
2X + Y = 250 - - - - - - - - - (1)

2(X-2)-1.6Y=116
2X-4-1.6Y=116
Transposing (- 4) on right side.

2X-1.6Y=120-----------------(2)
Equating (1)& (2)
2X + Y = 250
2X-1.6Y=120
(-) (+) (-)

2.6Y = 130
Y=50---------------(3)
Putting (3) in (1)

2X + 50 = 250
2X=200
X=100