The ratio of students to teachers is 40 to 3. How many teachers are there when there are 65 students?

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The ratio of students to teachers is 40 to 3. How many teachers are there when there are 65 students?
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40 to 3 is the same as 40x to 3x where 40x = # of students:
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40x = 65
x = 13/8
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Then 3x = 3(13/8) = 39/8 is approximately 5 (approximate # of teachers)
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Cheers,
Stan H.

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