Beverage Dispenser J and Beverage Dispenser K have a total amount of 3177 mℓ of water. For Beverage Dispenser K and Beverage Dispenser L, the total amount of water is 4563 mℓ. The amount of water in Beverage Dispenser J is ⁵₈ the amount of water in Beverage Dispenser L. What is the average amount of water in the 3 beverage dispensers?
Beverage Dispenser J = 5 u
Beverage Dispenser L = 8 u 

Beverage Dispenser K + Beverage Dispenser J = 3177 --- (1)
Beverage Dispenser K + Beverage Dispenser L = 4563 --- (2)

(2) - (1)
(Beverage Dispenser K + Beverage Dispenser J) - (Beverage Dispenser K + Beverage Dispenser L) = 4563 - 3177
8 u - 5 u = 1386
3 u = 1386

1 u = 1386 ÷ 3 = 462
Beverage Dispenser J = 5 u = 462 x 5 = 2310

Beverage Dispenser J + Beverage Dispenser K + Beverage Dispenser L = 2310 + 4563 = 6873 mℓ

Average amount of water in the 3 beverage dispensers
= 6873 ÷ 3 
= 2291 mℓ

Answer(s): 2291 mℓ