Bondo.....

It varies with temperature and humidity. I find that it is a pretty wide ratio with a LOT more filler than catalyst. Colder weather means a LOT slower setup, just like concrete.
Next time, consider a better body filler like Rage Gold. Most fillers will shrink a bit over time but Rage seems better. It spreads and sands better too.
Funny aside.....
Years back I was doing bodywork and popped the cap off of a BONDO can. Inside was the catalyst and an offer to get a FREE red BONDO jacket with proof of purchase of 10 of their 1 gallon cans. I laughed at the thought of the guy at the car show bragging about his car while wearing a jacket that shouts just how much body filler is in his car! You might as well wear a Preparation H jacket or something equally humiliating!
Hey now.. I wear my Prep H jacket everywhere I go and the people say I look "slick" and "bad ***" in it... I just wish I could get the chilli stains off it..

Lmao