5pencils and 7 pens together cost ₹50 whereas 7pencils and 5 pens together cost ₹ 46.find the cost of one pencil and that of one pen graphically
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Answer:
let the cost of 1 pencil=x
cost of 1 pen=y
A.T.Q
5x+7y=50
5x+7y-50=0...........1.
Again A.T.Q
7x+5y=46
7x+5y-46=0..…........2.
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