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20-07-2014
Mathematics

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Two glasses together contain 280 mLof water. The first glass contains 80 ml more than the second glass. How much water does the first glass contain?

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konrad509 konrad509

20-07-2014

x - 1st glass
y - 2nd glass

[tex]x+y=280\\ x=y+80\\\\ y+80+y=280\\ 2y=200\\ y=100\hbox{ ml}\\\\ x=100+80\\ x=180\hbox{ ml}[/tex]

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