![\"\"](\"../../../userfiles/image/steps_images/step1.JPG\")
The expression is 18 cups to 45 cups.
\The ratio is ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=0f2cccc325820018579effef920eff83.png\")
.
The fraction is ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=3944cae47b32daf41a57c6704adf10c6.png\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=5b54be3f8f16a146bf165910a4dc7d28.png\")
(Divide numerator and denominator by their GCF 90)
![\"\"](\"plugins/fckeditor_wiris/integration/showimage.php?formula=a69f28003bcf206cf9f78c81e567594e.png\")
(Cancel common terms)
![\"\"](\"plugins/fckeditor_wiris/integration/showimage.php?formula=a5d8a402c0c15d25ef6a86902c261338.png\")
![\"\"](\"../../../userfiles/image/steps_images/solution.JPG\")
The ratio of cups to cups is 2 to 5. This means for every 2 cups, 5 of them cups are required.