Question

The present population of a town is 7,20,000. The population of a town increases at the rate of 20%p.a. Find the population of town 1)After two years 2) two years ago​

Answer 1

Answer:

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➞ Refers to attachment !

Answer 2

Answer:

1> 10,36,800   2>4,60,800

Step-by-step explanation:

A = P ( 1 + R/100)^2

A1 = 720000 ( 1 + 20/100 )^2

= 720000 ( 1 + 1/5 )^2

= 720000 ( 6/5 )^2

= 720000 * 6/5 * 6/5

= 28,800 * 36

= 10,36,800

A2= 720000 ( 1 - 20/100 )^2

= 720000 ( 1 - i/5 )^2

= 720000 ( 4/5 )^2

= 720000 * 4/5 * 4/5

= 28,800 * 16

= 4,60,800

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