Question 269612
In a nation of 221 million people, the urban population is 2.25 times the rural population. Find the rural and urban population.
PLEASE PLEASE PLEASE HELP

Let r be the rural population and u be the urban population. Then we have:

1) u = 2.25*r and
2) u + r = 221

Substitute 2.25*r for u (from equation 1) in equation 2) and solve for r:

2.25*r + r = 221 
3.25*r = 221
r = 221/3.25

Calculate r above and then calculate u = 2.25*r