Question

City A has a population of 148000 which is decreasing at the rate of 2300 per year. City B has a population of 96000 which is increasing at the rate of 1700 per year. In how many years will the population of two cities become equal?

• A. 13
• B. 12
• C. 11
• D. 14
• E. None of these

Answer 1

The correct option is A

13

Difference between population = 148000-96000 = 52000

Let the number of years be x.

Thus, 2300x+1700x = 52000 $⟹$ x = 13