Answer:
Population in 1998 year = 6.22 billion
Step-by-step explanation:
Given:-
- The population in year 1987, Po = 5 billion
- Growth rate, r = 2%
- World population follows an exponential growth model
Find:-
The projected world population in 1998.
Solution:-
- The exponential growth model is mathematically expressed as:
Population in x year = Po* ( 1 + r/100)^( x - xo )
Where, xo: The base year.
- Plug in the values and solve for the projected population in year 1998:
Population in 1998 year = 5,000,000,000* ( 1 + 2/100)^( 1998 - 1987 )
Population in 1998 year = 5,000,000,000* ( 1 + 0.02)^( 11 )
= 5,000,000,000* ( 1.02 )^( 11 )
= 6.22 billion
