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anonymous
 one year ago
Meryl needs to add enough water to 11 gallons of an 18% detergent solution to make a 12% detergent solution. Which equation can she use to find g, the number of gallons of water she should add?
anonymous
 one year ago
Meryl needs to add enough water to 11 gallons of an 18% detergent solution to make a 12% detergent solution. Which equation can she use to find g, the number of gallons of water she should add?

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kropot72
 one year ago
Best ResponseYou've already chosen the best response.0The amount of detergent is 11 * 0.18 = 1.98 gallons. When g gallons of water is added to the 11 gallons of solution, the total amount of solution will be (11 + g) gallons. If the (11 + g) gallons is to be a 12% solution, the following equation applies: 0.12(11 + g) = 1.98 which simplifies to: 1.32 + 0.12g = 1.98 giving 0.12g = (1.98  1.32) gal. and finally \[\large g=\frac{(1.981.32)}{0.12}\ gal.\]
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