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28 Jan 2013, 08:08
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E
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
45%
(medium)
Question Stats:
63% (01:42) correct
37%
(01:30)
wrong
based on 449
sessions
History
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Time
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Not Attempted Yet
Five years ago at Laboratory B, the ratio of doctorate to nondoctorate researchers was 2:3. If no researchers have resigned, what is the current ratio?
(1) In the last 5 years, twice as many doctorates were hired as nondoctorates.
(2) 50 doctorates were hired during the last 5 years.
Thanks & Regards
Vinni
(1) In the last 5 years, twice as many doctorates were hired as nondoctorates.
(2) 50 doctorates were hired during the last 5 years.
Thanks & Regards
Vinni
Pure algebraic questions like this one are no longer part of the GMAT Data Sufficiency syllabus.
For relevant Data Sufficiency questions, please check the Data Sufficiency forum:
Data Sufficiency Forum
Data Sufficiency Forum
28 Jan 2013, 08:33
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Five years ago at Laboratory B, the ratio of doctorate to nondoctorate researchers was 2:3. If no researchers have resigned, what is the current ratio?
(1) In the last 5 years, twice as many doctorates were hired as nondoctorates.
(2) 50 doctorates were hired during the last 5 years.
Each statement alone is clearly insufficient to answer the question. When taken together we'll have that 50 doctorates and 25 nondoctorates we hired during the last 5 years. Now, if originally there were 2 doctorates and 3 nondoctorates, then the current ratio would be (2+50)/(3+25)=52/28 BUT if originally there were 4 doctorates and 6 nondoctorates, then the current ratio would be (4+50)/(6+25)=54/31. Not sufficient.
Answer: E.
Hope it's clear.
(1) In the last 5 years, twice as many doctorates were hired as nondoctorates.
(2) 50 doctorates were hired during the last 5 years.
Each statement alone is clearly insufficient to answer the question. When taken together we'll have that 50 doctorates and 25 nondoctorates we hired during the last 5 years. Now, if originally there were 2 doctorates and 3 nondoctorates, then the current ratio would be (2+50)/(3+25)=52/28 BUT if originally there were 4 doctorates and 6 nondoctorates, then the current ratio would be (4+50)/(6+25)=54/31. Not sufficient.
Answer: E.
Hope it's clear.
28 Jan 2013, 08:46
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Since we don't know the exact number of doctorate and nondoctorate researchers the answer couldn't be found.
The answer is E.
The answer is E.
