Question

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

Answer:

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Answer 2

Answer:

x = 2

y = 3

Step-by-step explanation:

0.2x + 0.3y = 1.3-------------(1)

0.4x + 0.5y = 2.3------------(2)

Dividing (1)and (2) by 10

2x + 3y = 13--------------(3)×5

4x + 5y = 23-------------(4)×3

subtracting (4) from (5)

10x + 15y = 65

12x + 15y = 69

(-) (-) (-)

--------------------

-2x = -4

--------------------

=> x = -4/-2

=> x = 2

putting the value of "x" in (3)

2×2 + 3y = 13

=> 4 + 3y = 13

=> 3y = 13 - 4

=> y = 9/3

=> y = 3