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O.2x+0.3y=1.3 0.4x+0.5y=2.3

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O.2x+0.3y=1.3 0.4x+0.5y=2.3

Posted by Sakshi Agrawal 6 years, 5 months ago

CBSE > Class 10 > Mathematics

1 answers

Yogita Ingle 6 years, 5 months ago

0.2x + 0.3y = 1.3 ... (i)
0.4x + 0.5y = 2.3 ... (ii)
Solving equation (i), we get
0.2x = 1.3 – 0.3y
Dividing by 0.2, we get
x = 1.3/0.2 - 0.3/0.2
x = 6.5 – 1.5 y
Putting the value in equation (ii), we get
0.4x + 0.5y = 2.3
(6.5 – 1.5y) × 0.4x + 0.5y = 2.3
2.6 – 0.6y + 0.5y = 2.3
-0.1y = 2.3 – 2.6
y = -0.3/-0.1
y = 3
Putting this value in equation (i) we get x = 2

x = 2 and y = 3

0Thank You

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