How to solve problems of comparing fractions？

In 2019 AMC 8, there was a question about comparing fractions: Which of the following is the correct order of the fractions 15/11, 19/15, and 17/13 from least to greatest?  Let's see how to solve this type of problem!

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Tips for Finding Ratios of Different Shapes

Geometric problems are definitely included in the AMC 8 exam, and ratio calculations will be the most important part of them. Starting from which aspect to solve a ratio problem in a geometric figure is the key to getting a high score...

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