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Q.

Population of Delhi increases by 10% every year. If the current population of Delhi is 1,331,000 then what was the population 3 years ago?


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a

1000000

b

25000

c

10000000

d

1543200 

answer is A.

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Detailed Solution

Let us assume that the population of Delhi 3 years ago as x.
1331000=100+103% of x
⇒1331000=11103×x
⇒x=1331000×10001331=1000000
 
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