SOLUTION: If you need to mix a 20% salt solution for a patient, how much salt in grams would you add to 100 ml of water (weighs 100 gms)?

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Question 402336: If you need to mix a 20% salt solution for a patient, how much salt in grams would you add to 100 ml of water (weighs 100 gms)?

Answer by Tatiana_Stebko(1539) About Me  (Show Source):
You can put this solution on YOUR website!
Let x gms solt will add to 100 gms water, then all solution will be %28100%2Bx%29 gms, 20% of this solution is 0.2%2A%28100%2Bx%29 gms, but from text 20% of solution is solt (so x gms)
Equation
0.2%2A%28100%2Bx%29=x
0.2%2A100%2B0.2x=x
0.2x-x=-20
-0.8x=-20
x=-20%2F%28-0.8%29
x=25
So we have to mix 25 gms of solt with 100 ml of water if we need 20% salt solution
Answer 25 gms