I cannot believe how long you have argued with Inogen for, sometimes its best not to argue with an idiot and give up.
He kept quoting me and I was bored so happy to respond
However you are both wrong.
Nah, you've highlighted another ambiguity (since we're assuming the question is deliberately ambiguous then fair enough) and provided a third interpretation there, that's fine it doesn't mean the other explanations are wrong.
In the second half the teams outside the top 6 scored 13/20 of the goals.
It doesn't say "of the total goals" or better still "of the goals scored in the game as a whole" most people have read it as implying that it refers to the second half, you've highlighted that you've read it as applying to the total goals scored across the game.
So we've now got
three four interpretations, two that can't be solved without further information and two more that give answers of 2/5 and 1/4
edit - I should have added that you could also use that interpretation that the second statement refers to total goals to the interpretation that the question just gives the proportion of goals scored and then write out a different set of reasonable answers as a previous poster did albeit starting at 1/4.
In all honesty it is one of those deliberately ambiguous questions typical of group interviews to determine group dynamics
I don't think this is typical of anything asked in interviews, it is more like the questions along the lines of:
"hey guys what is the answer to: 6 ÷ 2(1+2)"
That can generate a whole load of explanations from "BODMAS" to "well my calculator says..." to "BODMAs is for kids, I'm an Engineer and I say..." etc...