The total cost of 6books and 7pens is 79rs and the total cost of 7books and 5 pen is 77 rs. Find the cost of 1book and 2pens
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let cost of 1 book is x rs
and 1 pen is y rs
then 6x+7y=79
7x+5y=77
solving both equation you get cost of both
and 1 pen is y rs
then 6x+7y=79
7x+5y=77
solving both equation you get cost of both
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