64 is 66 2/3% of what number?

What is the missing reason in step 5? linear pair postulategivendefinition of complementary anglescongruent complements theorem

Sandy is ordering bread rolls for her party, she wants 3/5 of the rolls to be whole wheat. what other factions can represent part of the rolls that will be whole wheat? shade the models to show your work.

Can someone check if i did this right since i really want to make sure it’s correct. if you do you so much