Amit bought an article for ₹310 and sold it at a loss of 25 %. With this money, he bought another article and sold it at a gain of 40%. What was his overall gain or loss percent?

Gain 5%

Let CP of the article =  100

SP of the article = 100 × \(\frac{75}{100}\) = 75

In 75 he bought another article ,

SP of another article = 75 × \(\frac{140}{100}\) = 105

Profit = 100 - 105 = 5

Profit percentage = \(\frac{5}{100}\) × 100 = 5%