[If labor cost doubles then labor goes from .30/dollar to .45/dollar]
I’m on your side on economic issues, of course. However, it appears you meant to say “if labor cost increases 50%”.
If labor increases from $9/hr to $15/hr, that’s a 66% (rounded low) increase - closer to 67%. 2/3 increase.
30 cents per dollar would now be 50 cents per dollar.
Ok using your assumption a 2/3 increase the new cost basis would be :
.50/1.20 = X / 100 = 42%. A 12% increase over the current 30%. No where near 50% increase...