The old ratio of Isha and Manish is 3 : 2, and the new ratio is 1 : 1.
The sacrificing ratio is calculated as: \[ \text{Sacrificing Ratio} = \text{Old Ratio} - \text{New Ratio} \] For Isha: \[ \frac{3}{5} - \frac{1}{2} = \frac{6}{10} - \frac{5}{10} = \frac{1}{10} \] For Manish: \[ \frac{2}{5} - \frac{1}{2} = \frac{4}{10} - \frac{5}{10} = -\frac{1}{10} \] The goodwill to be adjusted: \[ rupee3,00,000 \times \frac{1}{10} = rupee30,000 \]
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