By selling an article for Rs.900; a man gains 20%. Find his cost price and the gain.
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Sp=900
Gain=20%
Gain=20% of cp(x)
=x/5......(1)
Cp=Sp-gain
x=900-x/5
x+x/5=900
6x/5=900
x=900×5/6
Cp=Rs.750
Gain=x/5=750/5=150
Gain=20%
Gain=20% of cp(x)
=x/5......(1)
Cp=Sp-gain
x=900-x/5
x+x/5=900
6x/5=900
x=900×5/6
Cp=Rs.750
Gain=x/5=750/5=150
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