Water solution

How many grams of salt should we dissolve in 400 g of water to get a 20% solution?

Correct answer:

x =  100 g

Step-by-step explanation:

m1=400 g q=20%=20100=0.2  x=q (m1+x) x=0.2 (400+x)  0.8x=80  x=100=100 g   Verifying Solution:   c=100 xm1+x=100 100400+100=20 %



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