Q2 of 71 Page 53

Obtain a pair of linear equations in two variables from the following information:

The sum of the cost of 1kg apple and 1kg pine-apple is Rs. 150 and the cost of 1 kg apple is twice the cost of 1kg pine-apple.

Let the cost of 1 kg apple = x


Let the cost of 1 kg pine-apple = y


Given that, sum of the cost of 1 kg apple and 1 kg pine-apple is Rs. 150


⇒ x + y = 150 …[1]


Also, cost of 1 kg apple is twice the cost of 1kg pine-apple


⇒ x = 2y …[2]


eq[1] and eq[2] are the required equations.


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