Respuesta :
Let us suppose after x months the population of both town's will be equal.
From the given directions, we have
The population of the first town after x months is given by
[tex]200x-125x+43425[/tex]
The population of the second town after x months is given by
[tex]45000-150x[/tex]
In order to the population of the both town's to be equal, we have
[tex]200x-125x+43425= 45000-150x[/tex]
This is the required equation that represents the given situation.
Now, let us solve the equation
[tex]200x-125x+43425=\:45000-150x\\ \mathrm{Add\:similar\:elements:}\:200x-125x=75x\\ 5x+43425=45000-150x\\ \mathrm{Subtract\:}43425\mathrm{\:from\:both\:sides}\\ 75x=-150x+1575\\ \mathrm{Add\:}150x\mathrm{\:to\:both\:sides}\\ 225x=1575\\ \mathrm{Divide\:both\:sides\:by\:}225\\ x=7[/tex]
Therefore, after 7 months the population of both town's will be equal.