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m-30%*(1+25%)m=4500

-foottbsallmum67

Guest Mar 9, 2017
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m-30%*(1+25%)m=4500


\(m-0.30*(1+0.25)m=4500\\ 1m-0.30*1.25*m=4500\\ 1m-0.375m=4500\\ m(1-0.375)=4500\\ m=4500\div (1-0.375)\\ \)

 

4500/(1-0.375) = 7200

Melody  Mar 9, 2017

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