How to solve the length of a side of a figure?

The two-way frequency table below shows data on playing a sport and playing a musical instrument for students in a class.

Which shows the pre image of triangle xyz

Amuffin recipe, which yields 12 muffins, calls for cup of milk for every 1 cups of flour. the same recipe calls for cup of coconut for every cup of chopped apple. to yield a batch of 30 muffins, how much flour will be needed in the mix?