SOLUTION: A chemist added 90 liters of alcohol solution A to 108 liters of 22 percent alcohol solution to get 37 percent solution. Express the concentration of the solution A in percentage.

Question 33187: A chemist added 90 liters of alcohol solution A to 108 liters of 22 percent alcohol solution to get 37 percent solution. Express the concentration of the solution A in percentage. Put % after your answer.
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
Start: 108 liters; 22% solution; amount of alcohol=0.22(108)=23.76 liters
Add: 90 liters; x% solution; amount of alcohol= 90x
End with: 198 liters; 37% solution: amount of alcohol= 0.37(198)= 73.26 liters
EQUATION:
alcohol + alcohol= alcohol
23.76 + 90x = 73.26
90x=49.5
x=.55 = 55%
Cheers,
Stan H.

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