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# gmat Q2

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Senior Manager
Joined: 12 Mar 2009
Posts: 301

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20 Jun 2009, 03:32
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Director
Joined: 04 Jan 2008
Posts: 818

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20 Jun 2009, 04:49
repeated

try to give file name like GPREP2-Q no 29.jpg
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Senior Manager
Joined: 15 Jan 2008
Posts: 260

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20 Jun 2009, 06:56
Why is the answer C ??

the number when rounded to neared thousand is .455
means the number can be 0.4549 or 0.4551
i.e

0.4545
0.4546
0.4547
0.4548
0.4549
0.4550
0.4551
0.4552
0.4553
0.4554

in all the cases teh number rounded to hundred will be 0.46 only rite..
Manager
Joined: 28 Jan 2004
Posts: 198
Location: India

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20 Jun 2009, 13:04
agree with Neochronic
Manager
Joined: 28 Jan 2004
Posts: 198
Location: India

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21 Jun 2009, 01:23
Correction -
0.4545 = .45 when rounded to hundreths.
0.4546 = .45 when rounded to hundreths.
0.4547 = .45 when rounded to hundreths.
0.4548 = .45 when rounded to hundreths.
0.4549 = .45 when rounded to hundreths.
0.4550 = .46 when rounded to hundreths.
0.4551 = .46 when rounded to hundreths.
0.4552 = .46 when rounded to hundreths.
0.4553 = .46 when rounded to hundreths.
0.4554 = .46 when rounded to hundreths.
So we need both the stmts. Hope it helps.
Senior Manager
Joined: 15 Jan 2008
Posts: 260

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21 Jun 2009, 01:27
Anyone for explanation..
nitya34 ??

i am looking for understanding the 'rounding' concept better..
Senior Manager
Joined: 15 Jan 2008
Posts: 260

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21 Jun 2009, 01:29
mdfrahim wrote:
Correction -
0.4545 = .45 when rounded to hundreths.
0.4546 = .45 when rounded to hundreths.
0.4547 = .45 when rounded to hundreths.
0.4548 = .45 when rounded to hundreths.
0.4549 = .45 when rounded to hundreths.
0.4550 = .46 when rounded to hundreths.
0.4551 = .46 when rounded to hundreths.
0.4552 = .46 when rounded to hundreths.
0.4553 = .46 when rounded to hundreths.
0.4554 = .46 when rounded to hundreths.
So we need both the stmts. Hope it helps.

Yeah i see that 0.4545 becomes 0.45 when rounded to hundredths.. but why ?/

0.4545 first becomes 0.455 and then becomes 0.46...

when rounding to hundredths, dont you round first to thousands as it is availalble and then round it to hundredths.. or you only consider the thousands digit when rounding to hundredths.. ?
Intern
Joined: 08 Jun 2009
Posts: 9

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24 Jun 2009, 03:36
From statement 1, the answer could either be 0.4551 or 0.4549 (i.e. thousandth no. is either 4 or 5)

taken together with statement 2, you know the thousandth no. is 5 so when you round 0.4551 to the hundreth no. it become 0.46
Manager
Joined: 05 Aug 2008
Posts: 88
Schools: McCombs Class of 2012

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24 Jun 2009, 14:15
Neochronic,

you can only round once, and not recursively as you pointed out. Otherwise the result of 0.4545 will be 0.5 and not 0.455. In this case (C) is the right answer since (A) leaves you to choose between 4 or 5 for the thousandths, and (B) narrows that down to only 5.

--== Message from GMAT Club Team ==--

This is not a quality discussion. It has been retired.

If you would like to discuss this question please re-post it in the respective forum. Thank you!

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Re: gmat Q2 &nbs [#permalink] 24 Jun 2009, 14:15
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