Question

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Answer 1

Answer:

14:31

Step-by-step explanation:

Ratio in 1 st bottle = 2:3

if 1/3 of solution is taken

phenyl = 2/5 * 1/3

water = 3/5 * 1/3

Similarly in 2nd bottle, if 1/2 of solution is taken

phenyl = 1/3*1/2

water = 2/3 * 1/2

in 3 rd bottle, if 2/3 solution is taken

phenyl = 1/4 *2/3

water = 3/4 * 2/3

$\frac{phenyl}{water} = \frac{\frac{2}{5} \times \frac{1}{3} + \frac{1}{3} \times \frac{1}{2} + \frac{1}{4} \times \frac{2}{3} }{ \frac{3}{5} \times \frac{1}{3} \times + \frac{2}{3} \times \frac{1}{2} + \frac{3}{4} \times \frac{2}{3} } = \frac{28}{62} = \frac{14}{31}$

ratio of phenyl : water in new mixture= 14:31