Ram sells two articles for Rs.740. He sells 1st at 15% loss and 2nd at 25% profit. Find the amount of overall profit/loss if the cost price of 1st article is equal to the selling price of 2nd article.

Rs.20

                    CP       :          SP                     15% = \(\frac{3}{20}\)

1st   →          20       :           17                     25% = \(\frac{1}{4}\)

2nd  →           4        :           5         

Multiply 2nd article's ratios by 4 for getting CP of first  =  SP of 2nd

               CP     :      SP

1st   →     20     :      17

2nd  →     16      :      20

          ————————————

               36     :      37               Profit = 19 - 18 = 1R

Total SP ⇒ 37R = 740

Profit  ⇒     1R = Rs.20 Ans.