Beverage Dispenser G and Beverage Dispenser H have a total amount of 3895 mℓ of water. For Beverage Dispenser H and Beverage Dispenser J, the total amount of water is 4215 mℓ. The amount of water in Beverage Dispenser G is ³₈ the amount of water in Beverage Dispenser J. What is the average amount of water in the 3 beverage dispensers?
Beverage Dispenser G = 3 u
Beverage Dispenser J = 8 u 

Beverage Dispenser H + Beverage Dispenser G = 3895 --- (1)
Beverage Dispenser H + Beverage Dispenser J = 4215 --- (2)

(2) - (1)
(Beverage Dispenser H + Beverage Dispenser G) - (Beverage Dispenser H + Beverage Dispenser J) = 4215 - 3895
8 u - 3 u = 320
5 u = 320

1 u = 320 ÷ 5 = 64
Beverage Dispenser G = 3 u = 64 x 3 = 192

Beverage Dispenser G + Beverage Dispenser H + Beverage Dispenser J = 192 + 4215 = 4407 mℓ

Average amount of water in the 3 beverage dispensers
= 4407 ÷ 3 
= 1469 mℓ

Answer(s): 1469 mℓ