Question

A boy bought a book for ₹x and sold it for ₹26. If his loss was x percent, find the second degree equation from which we can find cost price of the book.

• A. $x^2-100x+3600=0$
• B. $2x^2-100x+2600=0$
• C. $x^2-100x+2600=0$
• D. $x^2-200x+2600=0$

Answer 1

The correct option is C

$x^2-100x+2600=0$

S.P = ₹26

C.P = ₹x

Loss% = x%

$x=\frac{x-26}{x}\times 100$

$\Rightarrow x^2=100x-2600$

$\Rightarrow x^2-100x+2600=0$