Eduardo is a teacher. He taught 3 classes last week while his colleague Frankie taught double what Eduardo teaches. How many classes did Eduardo and Frankie teach in total?
Thoughts? Step-by-step reasoning:
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Frankie taught 3 * 2 = 6 classes. Combined, Frankie and Eduardo taught 3 + 6 = 9 classes.
Thus, the answer is 9.
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