Beverage Dispenser C and Beverage Dispenser D have a total amount of 1030 mℓ of water. For Beverage Dispenser D and Beverage Dispenser E, the total amount of water is 2352 mℓ. The amount of water in Beverage Dispenser C is ³₅ the amount of water in Beverage Dispenser E. What is the average amount of water in the 3 beverage dispensers?
Beverage Dispenser C = 3 u
Beverage Dispenser E = 5 u 

Beverage Dispenser D + Beverage Dispenser C = 1030 --- (1)
Beverage Dispenser D + Beverage Dispenser E = 2352 --- (2)

(2) - (1)
(Beverage Dispenser D + Beverage Dispenser C) - (Beverage Dispenser D + Beverage Dispenser E) = 2352 - 1030
5 u - 3 u = 1322
2 u = 1322

1 u = 1322 ÷ 2 = 661
Beverage Dispenser C = 3 u = 661 x 3 = 1983

Beverage Dispenser C + Beverage Dispenser D + Beverage Dispenser E = 1983 + 2352 = 4335 mℓ

Average amount of water in the 3 beverage dispensers
= 4335 ÷ 3 
= 1445 mℓ

Answer(s): 1445 mℓ