Total cost of 6 books and 7 pens is 79 rupees and the total cost of 7 books and 5 pens is 77 rupees.Find the cost of 1 book and 2 pens
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let cost of book and pens is x and y
6x+7y=79
7x+5y=77
now solve these you got value of x and y
put value of x and y in
x+2y you got answer.....
6x+7y=79
7x+5y=77
now solve these you got value of x and y
put value of x and y in
x+2y you got answer.....
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