City a population is 68000, decreasing at a rate of 80 per year city b having population 42000 increasing at a rate of 120 per year. in how many years both the cities will have same population
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let the population be same after x years
the population of city A after x yrs =68000-80x
the population of city B after x yrs =42000+120x
according to question
=> 68000-80x= 42000+120x
=> 26000=200x
=> 200x =26000
=> x = 26000 /200
=> x= 130 years
In 130 years both the cities will have same population
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@GauravSaxena01
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