Gas leak on a 1981 Chevy Citation (My car's model is not on the drop down) on 1990 Chevrolet Cavalier

About a week ago my tail pipe rusted through where it connects to the Catalytic Converter and they both started dragging on the ground. I parked the car shortly after I found out that it was dragging and haven't driven it since. I jacked the car up yesterday to try and jerry-rig the exhaust so that I could drive it until I can afford to get it fixed, and when it was in the air (about a 20 degree angle from the back tires) it started leaking gas at a rate of about 3 drips per second. I got spooked and lowered it down. When I checked under the hood, I could not find the leak. I'm a single mother of two and I need to get this fixed as quickly and inexpensively as possibly. Does anyone have any advice?

Asked by for the 1990 Chevrolet Cavalier
how much gas was in the car? it could be just the fuel pick up gasket has gone bad...or a crack in the fuel line,rubber cracks as it ages..