To find the original amount that, when increased by 5%, results in 504, you can set up the following equation:
Let the original amount be "x."
x + 0.05x = 504
Now, combine like terms:
1.05x = 504
To solve for x, divide both sides by 1.05:
x = 504 / 1.05
x ≈ 480
So, the original amount is approximately 480. When you increase 480 by 5%, you get 504.