When 20% of itself is added to a number, it gives 102. Find the number.

Let the number be X. The problem states X + 20% of X = 102. This can be written as X + 0.20X = 102, which simplifies to 1.20X = 102. Dividing 102 by 1.20 gives X = 85. Therefore, 85 is the correct number.