Enrico makes a list of the first twenty positive multiples of 3. Marie makes a list of the first ten positive multiples of 6. How many of the numbers on Marie's list are also on Enrico's list?
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<|im_start|>user
Enrico makes a list of the first twenty positive multiples of 3. Marie makes a list of the first ten positive multiples of 6. How many of the numbers on Marie's list are also on Enrico's list?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
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user
10
Enrico makes a list of the first twenty positive multiples of 3. Marie makes a list of the first ten positive multiples of 6. How many of the numbers on Marie's list are also on Enrico's list?
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