Beverage Dispenser A and Beverage Dispenser B have a total amount of 1922 mℓ of water. For Beverage Dispenser B and Beverage Dispenser C, the total amount of water is 2027 mℓ. The amount of water in Beverage Dispenser A is ⁵₈ the amount of water in Beverage Dispenser C. What is the average amount of water in the 3 beverage dispensers?
Beverage Dispenser A = 5 u
Beverage Dispenser C = 8 u 

Beverage Dispenser B + Beverage Dispenser A = 1922 --- (1)
Beverage Dispenser B + Beverage Dispenser C = 2027 --- (2)

(2) - (1)
(Beverage Dispenser B + Beverage Dispenser A) - (Beverage Dispenser B + Beverage Dispenser C) = 2027 - 1922
8 u - 5 u = 105
3 u = 105

1 u = 105 ÷ 3 = 35
Beverage Dispenser A = 5 u = 35 x 5 = 175

Beverage Dispenser A + Beverage Dispenser B + Beverage Dispenser C = 175 + 2027 = 2202 mℓ

Average amount of water in the 3 beverage dispensers
= 2202 ÷ 3 
= 734 mℓ

Answer(s): 734 mℓ