the total cost of95pens and 89notebooks are Rs 7434.  The total cost of 1 pen and 1 notebook is Rs 81.  Find the cost of 1 notebook?
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1 Answer

1....n+p=81.1  or p=81.1 -n

2....95p+89n=7434.1 . . .

95*(81.1 -n) +89n=7434.1

7704.5 -95n +89n=7434.1

-6n=7434.1 -7704.5

-6n=-270.4

n=270.4/6=45.066666666666666666...

maebee 45.07 kloes nuf
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