1.

(iv) 02x + 0.3y 1.30.4x +0.5y 2.3

Answer»

0.2x + 0.3y = 1.3 , on multiplying it with 2 => 0.4x + 0.6y = 2.6

and other equation is 0.4x + 0.5y = 2.3 subtracting 2 from 1 => 0.6y - 0.5y = 2.6 -2.3 => y = 0.3/0.1 = 3 and then x = (2.6-1.8)/0.4 = 0.8/0.4 = 2



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