Question
The current population of a city is 50,000. If the
population of males increases by 4% and the population of females increases by 6%, the total population will become 52,400. What is the current female population?Solution
Let the number of men =x Female =50,000-x 
4x+300000-6x =240000. -2x =-60000 X =30000. Female =50000-30000=20000.
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