You are making sets of pens and pencils to sell. you want each set to contain the same combination of pens and pencils. you have 105 pens and 147 pencils, and you want to use them all. what is the greatest number of these sets you can make?
Since the question doesn't say how many pens and/or pencils have to be in each "set", technically, you can make 105 sets that contain 1 of each. You would have 42 pencils left.
