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GRE Math Challenge #12 -Rounding 275 to 300 represents an in
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Updated on: 16 Feb 2020, 17:41
Updated on: 16 Feb 2020, 17:41
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Re: GRE Math Challenge #12
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16 May 2015, 15:01
16 May 2015, 15:01
1
sandy wrote:
Rounding 275 to 300 represents an increase of approximately what percent?
This question is missing some key information.
NOTE: For numeric entry (NE) questions on the GRE, you must enter the exact value unless you’re directed to round the answer.
Here, the exact answer (as a percent) is 9.090909.... (repeating), so it would be impossible to enter this in the entry box.
I'd say the question should be worded as follows:
Rounding 275 to 300 represents an increase of approximately what percent? (round answer to the nearest integer)
Here's my solution:
INCREASE = 300 - 275 = 25
So, the percent increase = (100)(25)/275
We COULD use the onscreen calculator to find this value.
Alternatively, we can take (100)(25)/275 and simplify it.
We get: (100)(25)/275 = (100)(1)(11)
= 100/11
= 9 1/11
So, the closest INTEGER is 9%
Cheers,
Brent
