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OpenStudy (anonymous):
A 50ml of10% acid solution want to make 25% acid solution. How much pure acid do i add?
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OpenStudy (anonymous):
\[.1\times 50+x=.25(50+x)\] solve for x
OpenStudy (anonymous):
\[5+x=12.5+.25x\] \[.75x=7.5\] \[x=7.5\div .75=10\]
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