Fidyah for missed Salaahs

Q: My mother passed away a few days ago. Is there fidyah to be paid for some missed salaah or fast? If so, how do we calculate it?

Q: My mum passed away a month ago and someone told me that we need to pay for any Salaah that she might have missed.  She was very regular with her Salaah, however, in the last few weeks before she passed away she became very ill and wasn’t able to perform her Salaah.  I’ve been told that we need to pay R10.00 for every Salaah missed.  Please would you advise whether this is correct and also how should this be paid, i.e. is it Lillah, Sadaka, etc. and which organization would be the best to pay it to or can we give it to someone who is poor.

Q: Can one perform qadha salaah for the deceased?