Gavin has 4 green apples and 4 red apples. That means it's in a ratio of 4:4 or 4/4 or simply 1
While, Tara has 4 green apples and 8 red apples. That means it's in a ratio of 4:8 or 4/8 or simply 1/2
So that means 1>1/2 or Gavin has a greater fraction of green apples than Tara's