প্রশ্ন সংশোধন করুন
প্রশ্ন:
In a certain population, there are times as many people aged 21 or under as there are people over 21. The ratio of those 21 or under to the total population is :
In a certain population, there are times as many people aged 21 or under as there are people over 21. The ratio of those 21 or under to the total population is :