Explanation:

Here’s the thing, let’s break it down step by step:

- Let the first number be x, the second number be y.

- "60% of x" means 0.6x and "three-fourth of y" means 0.75y.

- So, 0.6x = 0.75y

- If you divide both sides by y, you get 0.6x / y = 0.75

- Rearranging for x/y: x/y = 0.75 / 0.6 = 75/100 ÷ 60/100 = 75/60 = 5/4

Let's check the options:

- Option 1: 3:7 (that’s not it)

- Option 2: 2:5 (nope)

- Option 3: 7:3 (not matching)

- Option 4: 5:4

So the right answer is Option 4 — 5:4.

What this really means is: for every 5 units of the first number, you’ve got 4 of the second. The math backs it up, plain and simple.