Rachel is an artist. She posts a speed painting video each week on her Instagram account to promote her work. To save time, she paints and records 4 videos at a time. It takes her about 1 hour to set up her painting supplies and her camera. Then she records herself painting for 1 hour per painting. She takes another 1 hour to clean up. Each video takes 1.5 hours to edit and post. How long does it take Rachel to produce a speed painting video?
Rachel spends 1 + 1 = <<1+1=2>>2 hours setting up and cleaning up.
She paints for 1 hour x 4 paintings = <<1*4=4>>4 hours.
Then she edits 1.5 hours x 4 videos = <<1.5*4=6>>6 hours.
She spends 2 + 4 + 6 = <<2+4+6=12>>12 hours to make 4 videos.
So Rachel spends 12 / 4 = <<12/4=3>>3 hours on each video.
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