Question
Maya put 609 pens in three boxes Y, Z and A. Box Y and Box Z contained a total of 437 pens. Box Z and Box A contained a total of 345 pens. How many pens were there in Box Y and Box A altogether?


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Maya put 609 pens in three boxes Y, Z and A. Box Y and Box Z contained a total of 437 pens. Box Z and Box A contained a total of 345 pens. How many pens were there in Box Y and Box A altogether?