Bucket B has 3 more fruits than C (which has 9 fruits) for a total of 9+3 = <<3+9=12>>12 fruits
Bucket A has 4 more fruits than B (which has 12 fruits) for a total of 12+4 = <<4+12=16>>16 fruits
All three buckets have a total of 9+12+16 = <<9+12+16=37>>37 fruits
#### 37