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65
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How many quarts of a solution that is 80% water must be added to 10 quarts of a solution that is 40% water to produce a solution that is 64% water?

 Jun 2, 2020
 #1
avatar+26006 
+1

.8 x   +   .4(10)    =  .64 (10+x)     solve for x

 Jun 2, 2020

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