The profit-sharing ratio between Ravi and Toni after Vani's retirement is \(1:1\).
1. Total capital of the firm:
\[
\text{Total capital} = \rupee2,80,000.
\]
2. Capital to be contributed by each partner (in the ratio \(1:1\)):
\[
\text{Capital of each partner} = \frac{\rupee2,80,000}{2} = \rupee1,40,000.
\]
3. Current capital of Toni:
\[
\text{Toni's current capital} = \rupee1,08,000.
\]
4. Deficiency in Toni’s capital:
\[
\text{Deficiency} = \rupee1,40,000 - \rupee1,08,000 = \rupee32,000.
\]
Thus, Toni needs to bring \rupee32,000 for the deficiency of his capital.