But in Jandakot, 1990...
About six hours but I was a Silver C converter so it doesn't really count. But on a full time CPL course down-under a worthy record holder was a certain AC from Malawi. His 99 hours to solo on his CPL course was certainly remarkable. He was not what you call a natural. Worse was a Mr. K from Singapore. We stopped ground school to watch him taxi. Cruel I know, but was amusing; as was the look of the instructors trying to help him. After ten hours or so it was apparent he was unteachable.
But the hours to solo are not that important. What matters is that you are enjoying the process.
PM