I have 4 liters of 10% fertilizer. How much water do I need to add to have a 2% solution?

Correct answer:

V2 =  16 l

Step-by-step explanation:

V1=4 l p1=10%=10010=0.1 p=2%=1002=0.02  V1 p1=(V1+V2) p 4 0.1=(4+V2) 0.02  0.02V2=0.32  V2=16=16 l

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