Rating in Quiz

Hi,

It's the first time I use this module, so please forgive my ignorance. I have looked around about whether I could use rating or not in my quiz but I could'n find something relevant. I suppose that it's not straightforward, but since this module has a lot o features, probably I can do what I would like to do indirectly.

Le't say that I have the following quiz

Question1
1. Answer 11
2. Answer 12
3. Answer 13
4. Answer 14

Question2
1. Answer 21
2. Answer 22
3. Answer 23
4. Answer 24

Question3
1. Answer 31
2. Answer 32
3. Answer 33
4. Answer 34

As far as I'm concerned, this is quite easy to do it with the aid of Quiz module. You just define the correct answer in each question and then you take the result. But what if there is no correct answer but only some points which correspond to each answer? For instance

Question1
1. Answer 11 -> 5 points
2. Answer 12 -> 15 points
3. Answer 13 -> 25 points

Question2
1. Answer 21 -> 15 points
2. Answer 22 -> 5 points
3. Answer 23 -> 8 points
4. Answer 24 -> 21 points

Question3
1. Answer 31 -> 33 points
2. Answer 32 -> 11 points
3. Answer 33 -> 4 points

If I answer 1,3,2 then my final score is derived from a formula, let's say from the summation of each answer, i.e. 5+8+11=24.

How easy is it to do something like the above example with the quiz module? If it is not strait forward, could its api help me to do it?

Thanks in advance