Latest Infosys Aptitude Question SOLUTION: Cencus population of a district in 1981 was 4.54 lacs, while in year 2001 it was 7.44 lacs. What was the estimated mid-year population of that district in year 2009.

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(#M40037134) INFOSYS Numerical Ability question Find the mid-year population Keep an EYE

Cencus population of a district in 1981 was 4.54 lacs, while in year 2001 it was 7.44 lacs. What was the estimated mid-year population of that district in year 2009.

Asked In Infosys Shivam Chopra (10 years ago)

Solved adapala o v nageswara rao Read Solution (10)

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adapala o v nageswara rao  (9 years ago) Best Solution

1981......>4.54
diff=20 diff=2.9
2001......>7.44
diff=8 this diff=(8*2.9)/20=1.16
2009......>x=?
hence x=7.44+1.16=8.6 lac

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RAHUL UBHALE  (9 years ago)

population in 1981 is 4.54 lac

population in 2001 is 7.44 lac

total increment in population in 20 yrs=7.44-4.54=2.9 lac

total increment in 1 yr=2.9/20 lac=0.145 lac

so total increment in 8 years(2009-2001)=8*0.145=1.16 lac

so the population in 2009 is=7.44+1.16= 8.6 lacs

..............answer

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Deadman  (10 years ago)

8.6 LAKH !!
P(estimate)=P1+n/N {P2-P1) WHERE n=NO. MONThs from P1 census to date of estiMate
N=NO. of months between census,P1= FIRST census,P2=second census..ANSWER IS 8.6 LAKH...

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pratham  (10 years ago)

8.57 lakh

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Shivam Chopra  (10 years ago)

@Pratham - can you please answer with explanation???

As the method is needed....

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tirupathi reddy  (9 years ago)

Ans 8.61 lak
1981 4.54 lack
2001. 7.44 lack
R= ? 7.44 =4.54((1+R/100)^20). R= 16/5
Then use same formula
We get 8.61 lak

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paaredi muthyam reddy  (9 years ago)

every year 0.145 lacs population is increasing..
at the end of 8 and half years population is going to 8.67 lacs

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Reddy Tejaswi  (8 years ago)

in the year 1981 population is 4.54l
in 2001 population is 7.44L
so within 20 years(1981 to 2001)the population increased by 2.90L
so for 8 years(2001 to 2009)the population increases by,
(2.90*8)/20 =1.16
so in 2009,the population is 7.44L+1.16L=8.60L

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Sattam  (10 years ago)

8,52,750 is the answer

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venugopal  (9 years ago)

correct answer is 16 check it with 5 and 3

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