Question

0.4x + 0.3y = 2.5 and 0.5x – 0.3y = 1.1 then x = ​

Answer 1

Answer:

0.4x + 0.3y = 2.5 (a)

0.5x - 0.3y = 1.1 (b)

(a) + (b)

0.9x + 0y = 3.6 (c)

0.9x =3.6

X= 3.6/0.9

X= 4

X=4》(a) > 0.4 × 4 + 0.3y = 2.5

1.6 + 0.3y = 2.5

0.3 y = 2.5 - 1.6

= 0.9

Y = 0.9/ 0.3

= 3

X= 4, Y = 3