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In a junior high school, 30% of the students in the Math Club are in
the Science Club and 80% of the students in the Science Club are in
the Math Club. There are 15 students in the Science Club.

The number of students in the Math Club is 

 Mar 2, 2021
 #1
avatar+352 
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15x80/100=15x4/5=12

30%=12

10%=4

100%=$\boxed{40}$

 Mar 2, 2021

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