This is the worked example. Change any field above and press Calculate to use your own numbers.
Result
Market price
रु500.0
Bonus ratio
10.0%
Ex-bonus price
रु454.55
A 10.0% bonus adds one new share for every 10.0 held, so the share trades in 1.1 parts after the issue. The price adjusts on the ex-bonus date, which is not the same as the day the shares reach your demat account.