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29 Mar 2021, 07:00
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Difficulty:
5%
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Question Stats:
93% (01:24) correct
7%
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wrong
based on 67
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From 1980 to 1990, the population of Mitannia increased by 6%. From 1990 to 2000, it decreased by 3%. What was the overall percentage change in the population of Mitannia from 1980 to 2000?
A. 2.82% decrease
B. 2.82% increase
C. No change
D. 4.82% increase
E. 4.82% decrease
A. 2.82% decrease
B. 2.82% increase
C. No change
D. 4.82% increase
E. 4.82% decrease
29 Mar 2021, 07:57
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Let the population in 1980 be 100,
In 1900, it would be 106
In 2000, it would be 106-0.03*106 = 106- 3.18= 102.82
So compared to 1980, there is a 2.82 % increase.
IMO B
Posted from my mobile device
In 1900, it would be 106
In 2000, it would be 106-0.03*106 = 106- 3.18= 102.82
So compared to 1980, there is a 2.82 % increase.
IMO B
Posted from my mobile device
29 Mar 2021, 08:48
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Mona2019
Your answer is correct, but please let us not take the population in 1980 to be 100. Let it be 100x, where x is any proper integer.
For a population of 100 , we are getting 102.82 in 2000, which is not feasible.
