Question

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Answer 1

Answer:

Male : 36000

Female : 54000

Step-by-step explanation:

Total population = 90,000

m = $\frac{2}{3}$f

m + f = 90,000 =>  $\frac{2}{3}$f + f = 90,000

=> 5f = 270000

∴ f = 270000/5 = 54000

m =  $\frac{2}{3}$ × 54000

   = 36000

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Answer 2

Answer:

Step-by-step explanation:

Let the female population be F.

The male population is :

2/3 F

The total population in terms of F is :

F + 2/3 F = 5/3 F

This is equal to 90000.

Equating the two

5/3F = 90000

5F = 90000 × 3

5F = 270000

F = 270000/5

F = 54000

Male population is :

90000 - 54000 = 36000

Answer :

Male population = 36000

Female population = 54000