Akram Miya has two types of grapes. One is the fresh grapes containing 80% water and dry grapes containing 25% water. He sells 20 kg dry grapes, by adding water to the dry grapes, at cost price. What is the total profit percentage when after adding water the weight of 20 kg dry grapes increase in the proportion of water in fresh grapes?

Fresh grapes
Water: Pulp = 80% : 20% = 4 : 1
Dry grapes
Water: Pulp = 25% : 75% = 1 : 3
So out of 20 kg dry grapes, Water : Pulp = 5 kg : 15 kg
After adding of water the ratio of water : pulp is same as the fresh grapes = 4 : 1
So after adding water the quantity of Water and Pulp are 60 kg and 15 kg respectively.
Thus to make dry grapes similar to the fresh grapes, Akram requires 55 kg water with 20kg of dry grapes.
So, the profit (%) = (55 / 20) x 100 = 275 %