Without rephrasing, would you personally support the punctuation in each?
20-30 year olds
20-30 year old men
20 and 30 year olds
30 year olds / 30 year old men
$10-20 million a year industry
$75,000-80,000 a year income
10-20 pound weights
60-70 cent a week deduction
a 20-30 degree temperature difference
Thank you.