Question 1187772: A population grows so that it doubles after 5 years. If this population is 20 million today,
what will it be after 20 years? Answer by ikleyn(52879) (Show Source):
It will be 40 millions in 5 years from now;
80 millions in 10 years from now;
160 millions in 15 years from now, and
320 millions in 20 years from now.