2020 AMC 8 Problems/Problem 15
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Problem 15
Suppose 
of 
equals 
of 
What percentage of is 
Solution 1
We set up the following equation based on the given information: ![\[\frac{15x}{100}=\frac{20y}{100}\]](http://latex.artofproblemsolving.com/9/5/e/95e8e3e1da586ac3f2d9beeffdf357eda7d2c3a5.png)
Solving for yields ![\[\frac{3x}{20}=\frac{y}{5}\]](http://latex.artofproblemsolving.com/3/e/9/3e96257e7b6b6b4d0740bab758837db251f11e02.png)
![\[20y=15x\]](http://latex.artofproblemsolving.com/6/a/8/6a87dcade22ef4faf1e01158776e1602be42a283.png)
![\[x=1.\overline{3}y ==> D\]](http://latex.artofproblemsolving.com/7/7/8/778999f32ee308429ad5600b45c5329f0f34df14.png)
