The Population of a town was 12000 in 1980 and 16000 in 1990.
What was the percent increase in
the population of the town during
this period?
[2011]

33.3%

Step-by-step explanation:

Step one:

given data

Initial population (1980)= 12000

Final population(1990)= 16000

change in population= 16000-12000= 4000

Step two:

% increase= change in population/initail population *100

%increase= 4000/12000*100

%increase= 0.333*100

% increase= 33.3%

the two may have that, even a breakdown is probably offered

i believe the answer is the polygon, heptagon.