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OpenStudy (anonymous):
??????????????????????????????
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OpenStudy (anonymous):
What's the question?
OpenStudy (anonymous):
Show an equation and a solution for the problem. Arnold needs a 25% solution of nitric acid. He has 20 ml of a 30% solution. How many ml of a 15% solution should he add to obtain the required 25% solution?
OpenStudy (anonymous):
i got the answer
OpenStudy (anonymous):
20(.30)+.15x=.25(20+x) This the equation
OpenStudy (anonymous):
The answer would 7.5 ml of a 15% solution
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OpenStudy (zarkon):
10
OpenStudy (anonymous):
.
OpenStudy (anonymous):
oh ya sorry x=10
OpenStudy (anonymous):
Thanks You Guysss !!
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