Profit and Loss Practice Test 2

Question : 10 of 40

Marks: +1, -0

Meena sold an article for Rs 144 such that the profit per cent is equal to the CP ofthe article. Find the CP of the article soldby Meena.

Solution:

Let CP = x
Profit % = x %
Profit

=x/100 ×x=x^2/100

x+x^2/100=144

100x + x^ 2 = 14,400

x^2 + 100x - 14,400 = 0

x^ 2 + 180x - 80x - 14,400 = 0

(x + 180) (x - 80)=0

⇒ x = 80

So, CP = Rs 80

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