Profit from Diluting Juice

In the restaurant, they sell 0.2 l of juice for CZK 14. The waiter cheats the guests by diluting the juice with water at a ratio of 4:1. Water costs CZK 6 for 1 liter. How much extra did the waiter charge when he sold 10 liters of this mixture?

Final Answer:

x =  128 Kc

Step-by-step explanation:

c1=14/0.2=70 Kc/l c2=6 Kc/l  c=4+14 c1+1 c2=4+14 70+1 6=5286=57.2 Kc/l  x=10 (c1c)=10 (7057.2)=128 Kc



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