Beverage Dispenser V and Beverage Dispenser W have a total amount of 695 mℓ of water. For Beverage Dispenser W and Beverage Dispenser X, the total amount of water is 4479 mℓ. The amount of water in Beverage Dispenser V is ³₇ the amount of water in Beverage Dispenser X. What is the average amount of water in the 3 beverage dispensers?
Beverage Dispenser V = 3 u
Beverage Dispenser X = 7 u 

Beverage Dispenser W + Beverage Dispenser V = 695 --- (1)
Beverage Dispenser W + Beverage Dispenser X = 4479 --- (2)

(2) - (1)
(Beverage Dispenser W + Beverage Dispenser V) - (Beverage Dispenser W + Beverage Dispenser X) = 4479 - 695
7 u - 3 u = 3784
4 u = 3784

1 u = 3784 ÷ 4 = 946
Beverage Dispenser V = 3 u = 946 x 3 = 2838

Beverage Dispenser V + Beverage Dispenser W + Beverage Dispenser X = 2838 + 4479 = 7317 mℓ

Average amount of water in the 3 beverage dispensers
= 7317 ÷ 3 
= 2439 mℓ

Answer(s): 2439 mℓ