The price of 4 notebook and 7 pens is 115 rupees and the price of 4 notebook and pen is 90 rupees. What the price of a notebook and what is the price of a pen?
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Step-by-step explanation:
let the price of one notebook be x
and price of one pen be y
4x+7y=115
4x+y=90
by subtracting both the equations we get
6y=25
y=25/6=4.1666666....
therefore price of one pen=4.1666666....
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