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mraalhc2015 mraalhc2015
  • 22-01-2015
  • Mathematics
Answered

12 dogs decreased by 25%

Verified Answer :

Anonymous Anonymous
  • 26-01-2015

\(100\%-20\%=75\%\\\\\begin{array}{ccc}100\%&-&12\\\\75\%&-&x\end{array}\ \ \ \ |cross\ multiply\\\\\\100x=12\cdot75\ \ \ \ |divide\ btoh\ sides\ by\ 100\\\\x=\frac{900}{100}\\\\\boxed{x=9}\leftarrow answer\)

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