Correct Answer - D
Let the total member be `x`.
`x` member contribute is Rs. `x` and each member also contributes `x` paise.
So total Rupees is `x` member Rs. `x=Rs. x^(2)`
`x` member Rs. `x` paise `=(x.d)/100`
Total Rupes is
`x^(2)+(x^(2))/100=2525`
`101x^(2)=2525xx100`
`101x^(2)=101xx25xx100`
`x=50`