Africa's black rhino ----> expert please help

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Africa's black rhino ----> expert please help

by gmat25 » Fri Jul 08, 2011 10:59 pm
Africa's black rhino population in the mid-1970's numbered about 20,000, ten times the estimated population of 2,000 in 1997.

(A) the estimated population
(B) that of their estimated population
(C) more than the population's estimated amount
(D) more black rhinos than their population estimate
(E) more than that of their population's estimated amount

Kindly explain with reasons!!!!
Source: — Sentence Correction |

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by vineeshp » Sat Jul 09, 2011 5:21 am
Vineesh,
Just telling you what I know and think. I am not the expert. :)

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by amit2k9 » Sat Jul 09, 2011 5:44 am
a direct multiplication, hence 10 times is correct.
usage of their is not correct here.

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