Question

Население города едегодно увеличивается на 1/40 наличного состава жителей ( сейчас в нем 240 000) через сколько лет население города утроится? pascal

Answer 1

Var a,an,n:integer;
begin
a:=240000;
an:=a;
n:=0;
while an<3*a do 
 begin
 n:=n+1;
 an:=an+an div 40;
 end;
writeln('n = ',n);
end.

Результат:
n = 45

Answer 2

Population Growth Calculation

To calculate the population growth, we can use the formula:

New Population = Current Population + (Current Population * Growth Rate)

Given: - Current Population = 240,000 - Growth Rate = 1/40 of the current population

Using the given growth rate of 1/40 of the current population, we can calculate the new population after a certain number of years.

Calculation

New Population = 240,000 + (240,000 * 1/40)

New Population = 240,000 + 6,000

New Population = 246,000

So, after one year, the population will be 246,000.

Doubling Calculation

To find out how many years it will take for the population to triple, we can use the formula:

Years = log(3) / log(1 + Growth Rate)

Where: - Growth Rate = 1/40

Using this formula, we can calculate the number of years it will take for the population to triple.

Calculation

Years = log(3) / log(1 + 1/40)

Years ≈ 109.86

So, it will take approximately 110 years for the population to triple from the current population of 240,000.