Cost of the vegetable is Rs 100/kg and he’s earning a profit of 20%.
His profit is Rs 20/kg
His Selling Price will be Rs 120/Kg.
But as he is selling 900 grams as 1kg. His profit will be changed as follows:
As we know 1kg = 1000grams = Rs 100
Therefore, 900g = Rs 90
So, the new cost price= Rs 90
But, new Selling price = Rs 120
Hence, he is earning Rs 30 on 900 grams.
=> His actual profit % = Rs30/Rs90 *100
= 33.33%