Mr. Willson worked on making his furniture for 3/4 an hour on Monday. On Tuesday, he worked for half an hour. Then he worked for 2/3 an hour on Wednesday and 5/6 of an hour on Thursday. If he worked for 75 minutes on Friday, how many hours in all did he work from Monday to Friday?
Since there are 60 minutes in an hour, then Mr. Willson worked for 60 minutes x 3/4 = <<60*3/4=45>>45 minutes on Monday.
He worked for 60 minutes/2 = <<60/2=30>>30 minutes on Tuesday.
He worked for 60 minutes x 2/3 = <<60*2/3=40>>40 minutes on Wednesday.
He worked for 60 minutes x 5/6 = <<60*5/6=50>>50 minutes on Thursday.
So Mr. Willson worked for 45 + 30 + 40 + 50 + 75 = <<240=240>>240 minutes.
In hours, it is equal to 240/60 = <<240/60=4>>4 hours.
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