A welfare association collected Rs `202500` as donations from the residents. If each paid as many rupees as there were residents, find the number of residents.

Explanation

Let the number of residents be `x`.
Therefore, According to question `x` people donated `x` rupees.
`=>x × x = 202500`
`=> x² = 202500`
`=> x = 450`

There were `450` residents and each one of them paid `450`rupees for donation.