Big cities

City A has a population of 136000 which is decreasing at the rate of 2400/yr. City B has a population of 84000 which is increasing at the rate of 1600/yr.In how years will the population of two cities become equal?

Correct answer:

t =  13

Step-by-step explanation:

1360002400t=84000+1600t  1360002400 t=84000+1600 t  4000t=52000  t=400052000=13  t=13



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