Math, asked by udit9101, 3 months ago

The present population of town is 16000.if it increases at rate of 5%p.a.,What will be the unit digit of population after 2 years

Answers

Answered by itscandycrush
30

Given:-

  • Present population of town = 16000
  • Rate of increase of population = 5%p.a.
  • Time = 2 years

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To Find:-

  • Population of town after 2 years
  • Unit digit of population after 2 years

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Solution:-

➢ Population of town after 1 year

= Present population + 5% of population

= 16000 + 5% of 16000

= 16000 + ((5/100) × 16000)

= 16000 + (16000 ÷ 20 )

= 16000 + 800

= 16800

➢ Population of town after 2 year

= Population after 1 year + 5% of population

= 16800 + 5% of 16800

= 16800 + ((5/100) × 16800)

= 16800 + (16800 ÷ 20)

= 16800 + 840

= 17640

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Answer:-

Population of town after 2 years is 17640.

∴ Unit digit of population after 2 year is 0.

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