MABD = (6x+4) and mDBC = (8x-4)
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1h 15minutes, I converted each time into fractions, 2hours to 
and the 8hour to 
, this means, painter #1 finishes 1/2 of the project in 1 hour, and paither #2 finishes 1/8 of project in 1 hour, now when we make each fraction out of 2 hours, so 
and 
, we add them and get 
, then as mixed number, 1 1/4 which is 1 hour and 15min<em>(1/4 of a hour)</em> I believe im right.