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Total cost of 45 books and 65 copies is 1290 and that of 65 books and 45 copies is 1500. What will be cost of 1 book?

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Total cost of 45 books and 65 copies is 1290 and that of 65 books and 45 copies is 1500. What will be cost of 1 book?
posted May 27, 2015 by anonymous

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1 Answer

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b= cost of 1 book , c=cost of 1 copy

9b + 13c = 258 ;;; 13b + 9c = 300 ;;

solving we get b=Rs. 17.93

answer May 27, 2015 by Ankit Kamboj



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