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Ptolemy proposed the Epicycle Theory which uses epicycles to represent the path of the ____ around _____. The centers of these epicycles move around a big circle called the deferent centered around Earth. I've filled in the blanks where the words Epicycle Theory, epicycles, and deferent go, but...

Fred rides his bicycle 5 km/h slower than Samantha. In the time it takes Fred to go 45 km, Samantha travels 60 km. How fast is Fred riding his bicycle? I just need to know how to set up the equation.

My assignment for Japanese class is to write a short biography about a person we admire, and I chose to write about Aya. So far, I've only found the date when she was born and when she died, but nothing about where she was born.