Distribution of ancestor property between children of 2 wives

Hi. My Grandfather had 2 wife's, second marriage held after the 1st wife expired, this happened before 1955. 1. 1st wife has one daughter. 2. 2nd wife has 9 children. question a. Does the ancestral property has to be divided as 50% for 1st wife and 50% for the 2nd Wife, so the 1st wife's daughter gets 50% of the property and the remaining 50% is passed to remaining 9 CHildren or b. does it have to be equally distributed among the Children giving 1/10th of the share to 1st wife's daughter and equally distributed to the remaining 9 children of the second wife @ 1/10th ratio again Reason for asking the question was we got a input from one of our lawyer was since the marriage happened before 1956 than it should be as per point "a"