Question

0.5x + 0.2y =5
0.6x + 0.4y = 8.5

Answer 1

Step-by-step explanation:

0.5x+0.2y=5...............(1)

0.6x+0.4y=8.5............(2)

(1) x 6=3x+1.2y=30.....(3)

(2) x 5=3x+2y=42.5.....(4)

now

equation (4)-(3)=0.8y=12.5

y=12.5/0.8

y=125/8

now y=125/8 put in equation (4)

we get 3x+2(125/8)=42.5

3x=42.5-31.25

X =11.25/3

X =1125/300