In 1990, the population of area a was about 60 miltion. during the 1990s, the population of this area increased an average of about 0.4 million per year the population of area b was a bout 53 million in 1990. the population of this area increased an average of about 1 milion per year during the 1990s. assume that the rate of growth of these areas remains the same. estimate when the population of the area b would be equal to the population of the area a