4 quarts are in a single gallon
I think I may be missing something ... I don't completely understand your question.
All you need to make a fraction is two numbers and a bar. The bar can be either
horizontal or slanty. Then you write one number on top and the other number on
the bottom, and bada-bing, you have a fraction.
You can make fractions like
2700 / 600
27 / 6
9 / 2 (all 3 of these have the same value)
600 / 2700
6 / 27
2 / 9 (all 3 of these have the same value)
The most exact answer would be 0.19951% but the approximate answer would be 0.2%.
Replace x with |4x|+5 and simplify
X = $ 52 for the 12 books Diego bought