Question
Gwen, Simon and Tim have a total of 223 pens. Gwen and Tim have a total of 141 pens while Simon and Tim have a total of 156 pens. How many more pens does Tim have than Gwen?
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Gwen, Simon and Tim have a total of 223 pens. Gwen and Tim have a total of 141 pens while Simon and Tim have a total of 156 pens. How many more pens does Tim have than Gwen?