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Re: A seller increased the price of an item by X% and then decreased it by [#permalink]
The only possible options for X= 1,9
Let P = original Price of product
B = final price

Option A:
P(1+X/100)(1-Y/100)=B

Too many unknowns to derive any quantity

Option B:
P(1+X/100)(1-2X/100)=B

Too many unknowns to derive any quantity

A+B :
P(1+X/100)(1-Y/100)=2475
P(1+X/100)(1-2X/100)=2475
P(1-2X/100+X/100-2X^2/10000)=2475
Value of P can be determined for X= 1 or X =9.
Hence no concrete solution can be obtained.

Answer: E
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Re: A seller increased the price of an item by X% and then decreased it by [#permalink]
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Re: A seller increased the price of an item by X% and then decreased it by [#permalink]
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