by Chango
Per normal rules, the second one is correct!But if you apply the first option, you'll must to do this: 10+7=17, 17/2=8,5, so blue and purple will receive only 8 points each.
EDIT: Following the same concept, in a case of a 2nd and 3rd places tied, the formula will be: 7+4=11, 11/2=5,5, to 5 points each. Or even in a triple tie!: 10+7+4=21, 21/3=7, to 7 points each.