Math, asked by mahanabaijayanti, 21 days ago

13. If the annual decrease in the population of a town be 5% and the present population be 68590, what was it three years ago? ​

Answers

Answered by seemachandervir4113
1

Step-by-step explanation:

Correct option is A)

Present population, P=68590

Let R=5%

The population three years ago

= =

(1−

100

R

)

3

P

=

(1−

100

5

)

3

68590

=

(

20

19

)

3

68590

=

19×19×19

68590×20×20×20

=

6859

548720000

=80,000

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