1.a I will buy a new car, if I have the money.
1.b I would buy a new car, if I had a money
1.c I would have bought a new car, if I had the money

2.a I will not travel abroad, if my mom dosen't pay my trip.
2.b I wouldn't travel abroad, if mom didn't pay for my trip
2.c I wouldn't have traveled abroad, if mom hadn't paid for my trip

3.a What do you do, if you are rich
3.b What would you do, if you are rich
3.c What would you have done, if you had been rich