RE: If a man reduces the selling price of a fan from 400 to 380 his loss increases by 20% .What is the c...
The question should be "the loss increases to 20%" and not "loss increases by 20%" as these two have two completely different meaning. the former has an answer of 500 where as the latter is undeterminable as a 20 decrease to produce 20% loss, cost has to be 100.
First, set cost and profit loss to be x and y respectively.x+y=400 ----(1),if selling price=380, then profit loss is increased by 20% (1.2*y),hence, x+1.2y=380 -------(2).solve (1) and (2)x=500