If 25% of x is equal to 40% of y, what is the ratio x:y?

✓ Correct Answer: Option D

Translate the statement into an equation: 0.25x = 0.40y. To find x:y, divide both sides by y and by 0.25: x/y = 0.40/0.25 = 40/25 = 8/5. So, x:y = 8:5.