Question

0.2x +0.3y=1.3
0.4x +0.5y=2.3
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Answer 1

Step-by-step explanation:

answer is the value of x=2 ,

y=3

Answer 2

Answer:

The value of x is 7

The value of y is 3

Step-by-step explanation:

0.2x +0.3y=1.3  ⇒ x= 2x/10 + 3y/10 = 13/10 ⇒ 2x +3y =13

now, x = 13 - 3y /2 -------- (i)

0.4x +0.5y=2.3 ⇒ 4x  + 5y = 23

put value of x from ------- (i)

4 (13-3y/2) +5y = 23

2(13-3y) +5y = 23

26 - 6y +5y =23

-y = 23 - 26

-y = -3

∴ y = 3

put value of y in eq. ---------(i)

x = 13 - 3y /2

x= 13- 3(4)/2

x = 13 - 12/2

x = 13 -6

x = 7

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