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  • I have a doubt, kindly clarify. A biologist studied the population of rats in a barn.He found that the average natality was 250, averagemortality 240, immigration 20 and emigration 30.The net increase in population is:

A biologist studied the population of rats in a barn. He found that the average natality was 250, average mortality 240, immigration 20 and emigration 30. The net increase in population is:

  • Option 1)

    zero

  • Option 2)

    10

  • Option 3)

    15

  • Option 4)

    05

 

Answers (2)

best_answer

As we learnt in concept

B = 250                                               \therefore Net Increase

I = 20                                                   = 250+20 - (240+30) = 0

D = 240

E = 30


Option 1)

zero

This option is correct.

Option 2)

10

This option is incorrect.

Option 3)

15

This option is incorrect.

Option 4)

05

This option is incorrect.

Posted by

Aadil

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1

Posted by

vandana

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