A trader buys two articles for Rs. 3000 each article. While selling, he earns a profit of 10 percent on one and loses 20 percent on the other. What will be his overall loss percentage?

5 percent

Profit = 10%

Loss = 20%

Let,

               CP                SP

1st           10              11

2nd          10              8

         ————————————

             20                19

Loss = 20 - 19 = 1

Loss% = \(\frac{1 × 100}{20}\) = 5%