Obviously 12000 to 13000 is the Minimum / Must / Standard cost of living in Qatar for people with small family and live in 2 Bedroom flat. But your salary should be more than this so that you are able to save something. Otherwise there is no point in moving to Qatar.
Your salary and savings all depends on the cost of your accommodation. Try to negotiate at least QR 10,000 as accommodation allowance. Even if you rent a QR 8,000 flat you would still have some cushion for inflation.
1 USD = 3.65 QR
How you get QR 12000 equal to USD 40,000?
Obviously 12000 to 13000 is the Minimum / Must / Standard cost of living in Qatar for people with small family and live in 2 Bedroom flat. But your salary should be more than this so that you are able to save something. Otherwise there is no point in moving to Qatar.
Your salary and savings all depends on the cost of your accommodation. Try to negotiate at least QR 10,000 as accommodation allowance. Even if you rent a QR 8,000 flat you would still have some cushion for inflation.