Let the marks scored by Ravi be $x$.

According to the problem, Aman scored 24 marks more than Ravi, so Aman's marks would be $x + 24$.

The problem also states that Aman's marks are 60% of their combined total. The combined total of their marks is $x + (x + 24) = 2x + 24$.

Now, we can set up the equation using the 60% condition:

$x + 24 = 0.60 \times (2x + 24)$

Simplifying this equation:

$x + 24 = 0.60(2x + 24)$ $x + 24 = 1.2x + 14.4$ $x + 24 - 1.2x = 14.4$ $-0.2x + 24 = 14.4$ $-0.2x = 14.4 - 24$ $-0.2x = -9.6$ $x = \frac{-9.6}{-0.2} = 48$

So, Ravi scored 48 marks, and Aman's marks are:

$x + 24 = 48 + 24 = 72$

Thus, Aman scored 72 marks. The correct answer is:

$\boxed{72}$

Would you like more details on any step, or do you have further questions? Here are some related questions:

1. How would the equation change if Aman scored 30 marks more than Ravi?
2. What if Aman's marks were 70% of their combined total?
3. Can you solve a similar problem where Aman scored 20 marks more than Ravi?
4. How does the solution change if Aman's marks were 50% of the total?
5. What happens if Ravi scored 60 marks in the test instead?

Tip: When forming equations from word problems, translate the conditions step-by-step into mathematical expressions.