Africa's black rhino population in the mid-1970's numbered a

Hi abhasjha,

The "intent" of this sentence is to emphasis the number of black rhinos (20,000) in the mid-1970s was 10 times the number of black rhinos (2,000) in 1997.

Answer B communicates that idea, but includes a number of unnecessary/redundant words: "that" refers to "2,000", "their" refers to the "black rhinos" in 1997; neither of those words is necessary though. Redundancy is incorrect on the GMAT, so answer B is incorrect.

GMAT assassins aren't born, they're made,
Rich

Hi All,

I think that most, if not all of you already know the correct answer to this SC. Most of the wrong answers in this SC are based on idiom and "style" errors:

1) Idiom - the word "amount" refers to something that is NOT physically countable. Since rhinos ARE countable, the word "amount" is incorrect. Eliminate C and E.

2) Redundancy - the words "that" and "their" are unnecessary, since we already know that we're discussing rhinos. Eliminate B and D.

Final Answer: A

GMAT assassins aren't born, they're made,
Rich