18% of which number is equal to 12% of 75?

Sure, let's solve this step by step:

1. First, let's understand the problem. We are looking for a number (let's call it X) such that 18% of X is equal to 12% of 75.

2. We can write this as an equation: 0.18X = 0.12 * 75

3. Now, let's solve the equation. First, calculate 12% of 75: 0.12 * 75 = 9

4. So, the equation is now: 0.18X = 9

5. To solve for X, divide both sides of the equation by 0.18: X = 9 / 0.18

6. After doing the division, we find that X = 50

So, 18% of 50 is equal to 12% of 75.