SOLUTION: If 8 percent of an 18-gallon solution is chlorine, how many gallons of water must be added to make a new solution that is 6 percent chlorine?
A) 6 gallons B) 8 gallons C) 10 gall
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A) 6 gallons B) 8 gallons C) 10 gall
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Question 1189616: If 8 percent of an 18-gallon solution is chlorine, how many gallons of water must be added to make a new solution that is 6 percent chlorine?
A) 6 gallons B) 8 gallons C) 10 gallons D) 12 gallons E) 18 gallons
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If 8 percent of an 18-gallon solution is chlorine, how many gallons of water must be added
to make a new solution that is 6 percent chlorine?
A) 6 gallons B) 8 gallons C) 10 gallons D) 12 gallons E) 18 gallons
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The amount of chlorine is the same (remains the same) in the original mixture and after diluting.
So, if W is the volume of water to add, we have this equation for the chlorine mass
0.08*18 = 0.06*(18+W).
From this equation
0.08*18 = 0.06*18 + 0.06*W
0.08*18 - 0.06*18 = 0.06W
0.02*18 = 0.06W
W = = = 6 gallons. ANSWER
