The sum of pens and pencils are 25 Rs.if the pens cost are exceeds by the 9 Rs. Find the cost of pens and pencils.
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let the cost of pencils be x
cost of pens is 9+x
According to the given condition
x+9+x=25
2x+9=25
2x=25-9
2x=16
x=16
2
x=8
cost of pencils=x=Rs8
cost of pens=9+x=8+9=Rs17
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