SJS The death rates (per 100,000) for whites are as follows boys ages 0-1 640 deaths 1-4 31 5-9 13 10-14 13 15-19 87 which sums up to 792 per 100,000 among females the numbers are 515,23,12,13,37 for the same age groups.
As you can see the total death rate for under 20 is less than 1% so a 105:100 disparity could not possibly be closed by age 20.
With reagrd to your other point I don’t think I understand what you are saying. Noone is saying that all boys should marry girls two years younger than themselves what we are saying is that the communities average age gap has to be reduced.