Step-by-step explanation: If there are 6 Green Apples then there are 8 red apples. so the ratio is right now 8:6. divide both of those by 2 and it equals 4:3.
Robyn bakes 4 pies because if she has 8 total cups of flour and each pie needs 2 cups of flour then all you need to do its divide. Hope this made sense and helped.