You may be surprised to know what a finance officer of a university had told me when I asked him how do u give pension to 4 wives of a muslim if he dies?
Here is what he replied.
We see nomination first. If it has defined some ratio then we share it among 4 wives in that ratio.

If it has not specified any ratio then the family pension is divided equally among 4 wives.
Means 25% of total family pension to each.
If first wife dies then 33.3% to remaing three
If 2nd also dies then 50% to each
If 3rd also dies then 100% to the 4th one.
Cont'd..

*Now imagine the first wife is of 60 years age. 2nd, 50 years, 3rd 40 years and 4th 30 year and each survives for 70 years then the last one will enjoy family pension till 40 years as compared to a single wife of hindu just for 10 years.

Means they are getting more benefits even after deaths and Foolish hindus keep paying taxes.*