depends on your lifestyle, and the amount u want to save, for me wih a family of 5, on average on QAR.
food + gas = 1800 / month,
utility = 400 / m
car + petrol = 2200/m
entertainment = 300/m
tel+internet = 800/m
misc QAR1000/m

i consider my lifestyle is very comfortable, not extra and not rock bottom.