a mobile is sold at a loss of rs. 1200 if the selling price is rs. 3450 find the at which it was bought
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Loss=Cp-Sp
1200=cp-3450
-cp=-3450-1200
Cp=3450+1200
Cp=4650
1200=cp-3450
-cp=-3450-1200
Cp=3450+1200
Cp=4650
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