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CBSE Class 10 Answered

profit
Asked by | 12 Feb, 2009, 09:30: PM
answered-by-expert Expert Answer

let no of books is x and each has price y  so we have xy = 80 ....(1)   and for second case (x+4)(y-1) = 80

solving we get  y = 5 and x = 16

Answered by | 13 Feb, 2009, 12:21: AM

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