I sold two watches for Rs. 300 each, one at loss of 20% and other at the profit of 20%. What is the percentage of loss (-) or profit (+) that resulted from the transaction?  Choose the correct choice from the following options.
A) (+)4	B) (-)1	C) (+)1	D) (-)4	E) None of these
Solution: In such cases, always loss occurs. It can be calculated by this formula,   = (loss or gain percentage)2/100 = 4.   That is 4% of loss.   Graphic Change method   100==20%(loss) ==&gt;120==20%(gain) ==&gt;96.   % Loss = 4%.   Answer: Option (-)4
<result>D</result>
I sold two watches for Rs. 300 each, one at loss of 20% and other at the profit of 20%. What is the percentage of loss (-) or profit (+) that resulted from the transaction?