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Mathematics 18 Online
OpenStudy (anonymous):

15 cents to 4 dollars A. 375 B. 3/80 C. 1/375 D. 80/3

OpenStudy (mr.math):

How many cents are in a dollar?

OpenStudy (anonymous):

100

OpenStudy (mr.math):

Why aren't there any units in the given choices?

OpenStudy (anonymous):

Simplify the given ratio.

OpenStudy (mr.math):

Oh all right. (4 dollars=400 cents) \[{15 \over 400}={3 \over 80}\]

OpenStudy (mr.math):

All you need to know here is that when you're doing ratios, both quantities have to be in the same unit.

OpenStudy (anonymous):

oh gotcha

OpenStudy (mr.math):

:)

OpenStudy (mr.math):

Thanks for "fanning" me!

OpenStudy (anonymous):

thank you for helping me

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