Respuesta :
Step-by-step explanation:
Total mass = 18.6kg
Mass of empty box = 1.4kg
no. of bottles = 20
subtract the mass of the empty box from the total mass to get the mass of only the bottles: 18.6 - 1.4 = 17.2kg
Mass of the 20 bottles = 17.2kg
To get the mass of each bottle, we divide the mass of the bottles by the number of bottles.
therefore: 17.2 ÷ 20 = 0.86 kg
Therefore the mass of each bottle = 0.86kg.
Hope this helps.
Good luck ✅.