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A shopkeeper in Delhi sells $x$ notebooks for a total of Rs $(x^{2} - 5 x)$ .
The total amount received was Rs 24.
Find the number of notebooks sold.

Class 10Roots by FactorisationAlgebra — Quadratics

A7
B9
C8
D16

Step-by-Step Solution

x^{2} - 5 x = 24

, so

x^{2} - 5 x - 24 = 0 = (x - 8) (x + 3)

. Taking the positive root,

x = 8

notebooks.

Answer: C) 8

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