This is an example of a reverse percentage where we know the value AFTER an increase has happened, but we do not know what the original amount was.
Do NOT be tempted to just find
Here is a different approach from how Annie did it.
Percentages are always in direct proportion.
Let's compare what we know.
Let the population in 1999 be
We can consider that as
In 2000, the population had increased by
The population of 142,560 represents