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December 20, 2014

December 20, 2014

Posted by **Veronica** on Monday, August 31, 2009 at 11:42pm.

- Algebra -
**DrBob222**, Monday, August 31, 2009 at 11:56pmLet x = # students at second h.s.

=======================

0.4(900) + 0.75x = 0.525(900+x)

solve for x.

- Algebra -
**Dana**, Tuesday, September 1, 2009 at 12:09amSolution A is 30% acid and solution B is 60% acid. How many gallons of each solution must be used to create a 60 gallon mixute that is 50% acid. I have to set this up as a system of equations, and I thought one system was x + y = 60, but I can't get an answer, please help

- Algebra -
**Dr Russ**, Tuesday, September 1, 2009 at 4:32amIf you piggy back one question on another you are unlikely to get an answer, because it looks as though the question has been answered. You should show you question as a new problem.

- Algebra -
**Anonymous**, Tuesday, September 1, 2009 at 9:23am0.4(900)+0.75x = 0.525(900+x)

360 + 0.75x = 472.5 + 0.525x

0.75x - 0.525x = 472.5 - 360

0.225x = 112.5

0.225x/0.225 = 112.5/0.225

x = 500

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