profit

Asked by  | 12th Feb, 2009, 09:30: PM

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  | 13th Feb, 2009, 12:21: AM

Queries asked on Sunday & after 7pm from Monday to Saturday will be answered after 12pm the next working day.