The bar graph shows the favorite colors of 20 students in a class. How many more of them favored orange than those who favored green?

The horizontal axis represents the favorite color and the vertical axis represents the number of students who favored a particular color.
The number of students who favored orange were 5, and the number of students who favored green was only 1.
So the number of students who favored orange more were 5 - 1 = 4.
4 students favored orange more.
I found an answer from en.wikipedia.org
Red - Wikipedia
Red is the color at the long wavelength end of the visible spectrum of light, next to orange and opposite violet. It has a dominant wavelength of ...
For more information, see Red - Wikipedia
I found an answer from graphicdesign.stackexchange.com
How to select colors for target audience based on age? - Graphic ...
Sep 9, 2015 ... The bar chart shows orange increasing as part of the whole ... factor at all it's more about general aesthetics than any specific color use.
For more information, see How to select colors for target audience based on age? - Graphic ...