Cronic Villus sampling utilizes either a catheter or needle to biopsy placental cells that are derived from the same fertilized egg as the fetus. During amniocentesis, a small sample of the fluid that surrounds the fetus is removed.
Let:
x be the amount formula (oz)
3x be the amount of water (oz)
x + 3x = 120
4x = 120
x = 30
Then:
x = 30
3x = 90
A 120 oz of ready to consume infant feed should be composed of 30 oz of formula and 90 oz water.
No i would follow the bottles instructions to know with common knowledge