CBSE Class 10 Answered
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Asked by vt2008 | 08 Sep, 2009, 03:16: PM
Expert Answer
Let the list price of the book be Rs. x
Now total budget be Rs.1200
No. of books purchased = 1200/x
If the list price is increased by 10 Rs then new price = Rs.(x+10)
1200/(x+10)
ATQ 1200/x-1200/(x+10)=10
1200(10/(x2+10x)) =10
x2+10x-1200=0
Solving the equation we get x =-40,30
cost cannot be negative hence list price of the book is Rs.30
Answered by | 08 Sep, 2009, 03:42: PM
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