A container holds 40 gallons which is 80% water and 20% acid. How much of the water must be evaporated to produce a solution containing 50% acid?
A. 22 gallons
B. 24 gallons
C. 26 gallons
D. 28 gallons
E. 32 gallons
সঠিক উত্তরঃ
B.
24 gallons
Explanation:
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