What is the ruling on a woman driving a car?
It is permissible for the woman to drive a car, but it is impermissible for her to travel unaccompanied by a Mahram(Unmarriageable kin).
What is the amount of the Fitr Zakah(obligatory charity) of Ramadhaan?
The Fitr Zakah of Ramadhaan is a Sa`(2500 grams) from what the people of that country or state eat the most.
I`m a mother of three orphans. Is it permissible for me to spend on myself from their salary, such as buying a Jilbab*?
All perfect praise be to Allah the Lord of the Worlds. May His peace and blessings be upon our Prophet Mohammad and upon all his family and companions.
It is permissible to take a reasonable amount that is equal to your services to them. However, it is better that you don`t. The evidence on this is that Almighty Allah Says (What means): "Make trial of orphans until they reach the age of marriage; if then ye find sound judgment in them, release their property to them; but consume it not wastefully, nor in haste against their growing up. If the guardian is well-off, Let him claim no remuneration, but if he is poor, let him have for himself what is just and reasonable. When ye release their property to them, take witnesses in their presence: But all-sufficient is God in taking account." [An-Nisa`/6]. And Allah The Almighty Knows Best.
* A full-length outer garment, traditionally covering the head and hands, worn in public by some Muslim women.
Am I permitted to perform more than one prayer within single ablution?
You are permitted to pray as many as you could within one ablution and to recite Quran so long as your ablution isn't nullified.