if this 20k is basic only it's good as you mention they will provide you ticket, car, housing etc etc. is this seperate from 20k, are you coming here in Qatar for family status, regarding ticket check also if the academy will shoulder the expenses of your family ticket or you.

any ways here's the convertion of USD to Qatari Riyals
1USD = 3.645Qatari Riyals you compare your salary now.

cheers i hope this thing will help you. happy new year