Rohit sells two articles for Rs.75. He sells 1st at 20% 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.

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                    CP       :          SP                     20% = \(\frac{1}{5}\)

1st   →           5       :           4                      25% = \(\frac{1}{4}\)

2nd  →           4       :           5                    (CP of first  =  SP of 2nd)

               ——————————————     

                     9       =         9

No profit no loss. = 0