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27 Jul 2018, 00:53
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E
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[Math Revolution GMAT math practice question]
The population of state X increases by 10 percent every 10 years. If the population in 1990 was P million, how much larger is the population in 2010 than the population in 1990?
A. 0.1*P
B. 1.1*P
C. 0.01*P
D. 0.11*P
E. 0.21*P
The population of state X increases by 10 percent every 10 years. If the population in 1990 was P million, how much larger is the population in 2010 than the population in 1990?
A. 0.1*P
B. 1.1*P
C. 0.01*P
D. 0.11*P
E. 0.21*P
27 Jul 2018, 01:45
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p(1.1)^2=1.21P
The answer is E
The answer is E
pradeep15793
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Joined: 30 May 2018
Last visit: 16 Feb 2022
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Location: India
Schools: ISB '21 IIMC MBAEx "21 (D) IIMA PGPX "21 (D)
GMAT 1: 680 Q49 V33
GMAT 2: 710 Q50 V35
GPA: 4
WE:Engineering (Energy)
27 Jul 2018, 01:59
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Population in 2010
= p*(1.1)^2 = 1.21p
Increase = 1.21p-p = 0.21p
Posted from my mobile device
= p*(1.1)^2 = 1.21p
Increase = 1.21p-p = 0.21p
Posted from my mobile device
