\(\frac{1}{3} + \frac{2}{3} + \frac{3}{y} = \frac{{23}}{{12}}\), then y = ? 

A  2 

B  3 

C  4 

D  None 

Solution

Correct Answer: Option D

Solution: 

      \(\frac{1}{3} + \frac{2}{3} + \frac{3}{y} = \frac{{23}}{{12}}\) 

=>  \(\frac{3}{y} = \frac{{23}}{{12}} - (\frac{1}{3} + \frac{2}{3})\)                 =>  \(\frac{3}{y} = \frac{{23}}{{12}} - \frac{3}{3}\) 

=> \(\frac{3}{y} = \frac{{23}}{{12}} - 1\)                                                          => \(\frac{3}{y} = \frac{{23 - 12}}{{12}}\) 

=> \(\frac{3}{y} = \frac{{11}}{{12}}\)                                                  =>  11y = 36                  y = \(\frac{{36}}{{11}}\) 

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