Bobby has 3 times as many model spaceships as his friend Sylvester does. Bobby has 21 spaceships. How many model spaceships does Sylvester have?

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ksouza
9 because Sylvester has 3 times less than bobby so you divide 21 by 3 and you get 9
Its 7 because if you divide 21 by 3 you will get 7. I hope this helps you!