Question

60. X - 90% of x = xx?
(a) 1.09
(b) 1.9
(c) 0.91
(d) 9.1​

Answer 1

Answer:

x- 90x/100=xx

(100 - 90)x/100 =xx

10x/100 = xx

x/10 = xx

x = 1/10

x = 0.1 ans

Step-by-step explanation:

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Answer 2

Find the value:

Step-by-step explanation:

$\ Given \ value:\\\\X - 90\% \ of \ x = xx\\\\\ Find:\\\\ xx= ?\\\\\ Solution:\\\\x- 90\% \times \ x = xx\\\\\rightarrow x - 90\% \times \ x = x^2\\\\\rightarrow x - 90x\% = x^2\\\\\rightarrow x - \frac{90x}{100} = x^2\\\\\rightarrow \frac{x(100-90)}{100} = x^2\\\\\rightarrow \frac{10x}{100} = x^2\\\\\rightarrow \frac{x}{10} = x^2\\\\\rightarrow x^2-\frac{x}{10}=0\\\\\rightarrow x(x- \frac{1}{10})=0 \\\\\rightarrow x= 0 \ \ \ \ \ \ and \ \ \ \ \ x-\frac{1}{10}= 0$

$\rightarrow x= 0 \ \ \ \ \ \ and \ \ \ \ \ x=\frac{1}{10} \\\\\\rightarrow x= 0 \ \ \ \ \ \ and \ \ \ \ \ x= 0.1$

In the given question all option are incorrect.

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