A shopkeeper sells sugar at the profit of 20% and uses a weight which is 10% less than the original weight. Find his overall profit percentage?

Marked price with 20% profit: selling 100g at price of 120g (since 20% profit). But weight used is 90g (10% less). So shopkeeper gives 90g but charges for 108g (120×0.9). Effective profit = (108-90)/90 = 18/90 = 20%. However, customer pays for 120g but receives only 90g, so additional profit from weight cheating = 30/90 = 33.33%. Combined effect: overall profit = 33.33% (from false weight alone, as the 20% markup is already factored into the selling price). Answer A is correct.