The profit (in thousand rupees) from selling dozen notebooks is given by

MATHEMATICS · Single correct · CBSE · Mathematics · Quadratic Equations · Quadratic Equations

Problem

The profit (in thousand rupees) from selling

x

dozen notebooks is given by

P(x)= -x^2 + 12x - 20

. Find the greater number of dozen notebooks that must be sold so that the profit becomes zero. (a)

2

(b)

6

(c)

10

(d)

4