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Of the mutual funds on a select list, 1/3 have 5star [#permalink]
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06 Oct 2008, 07:38
Of the mutual funds on a “select list,” 1/3 have 5star ratings, and 2/5 of the remaining funds have 4star ratings. If the remaining 300 funds on the list have 3star ratings, how many funds are on the list? A. 500 B. 750 C. 1,000 D. 1,200 E. 1,500 == Message from GMAT Club Team == This is not a quality discussion. It has been retired. If you would like to discuss this question please repost it in the respective forum. Thank you! To review the GMAT Club's Forums Posting Guidelines, please follow these links: Quantitative  Verbal Please note  we may remove posts that do not follow our posting guidelines. Thank you.



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Re: Math problem [#permalink]
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06 Oct 2008, 07:51
albany09 wrote: Of the mutual funds on a “select list,” 1/3 have 5star ratings, and 2/5 of the remaining funds have 4star ratings. If the remaining 300 funds on the list have 3star ratings, how many funds are on the list?
A. 500 B. 750 C. 1,000 D. 1,200 E. 1,500 5/15+6/15 = 11/15 300 = 3/15x thus x = 1500



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Re: Math problem [#permalink]
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07 Oct 2008, 00:15
750.
If x is total number of funds then x/3 is the number for 5 star, (2x/3)*2/5 is the number for 4 star.
Total of 5 and 4 start = x/3 + 4x/15 = 9x/15 = 3x/5
Remaining is 2x/5 = 300 and hence, x = 750.



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Re: Math problem [#permalink]
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07 Oct 2008, 01:57
My two cents: 300=(2/3)*(3/5)*Total Total=750 B Which is the OA? Cheers
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Re: Math problem [#permalink]
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07 Oct 2008, 02:23
yes I m also getting B as answer



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Re: Math problem [#permalink]
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07 Oct 2008, 02:39
I got 1125, can someone show solution of this problem?



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Re: Math problem [#permalink]
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07 Oct 2008, 03:22
yezz wrote: albany09 wrote: Of the mutual funds on a “select list,” 1/3 have 5star ratings, and 2/5 of the remaining funds have 4star ratings. If the remaining 300 funds on the list have 3star ratings, how many funds are on the list?
A. 500 B. 750 C. 1,000 D. 1,200 E. 1,500 5/15+6/15 = 11/15 300 = 3/15x thus x = 1500 Shouldn't it be 4/15? Then x is 1125



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Re: Math problem [#permalink]
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07 Oct 2008, 03:29
kazakhb wrote: I got 1125, can someone show solution of this problem? My post has the steps.



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Re: Math problem [#permalink]
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07 Oct 2008, 03:40
scthakur wrote: kazakhb wrote: I got 1125, can someone show solution of this problem? My post has the steps. in your steps you make an assumption that 4star funds are two times 5star funds, but it is not given. is it?



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Re: Math problem [#permalink]
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08 Oct 2008, 01:50
kazakhb wrote: scthakur wrote: kazakhb wrote: I got 1125, can someone show solution of this problem? My post has the steps. in your steps you make an assumption that 4star funds are two times 5star funds, but it is not given. is it? No. Let us begin all over again. If x is total number of funds then x/3 is the number for 5 star. Remaining is (xx/3) = 2x/3. numer of 4 start funds is 2/5 of the remaining 2x/5 and hence (2x/3)*2/5 is the number for 4 star. Hope, this clarifies.



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Re: Math problem [#permalink]
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08 Oct 2008, 02:00
albany09 wrote: Of the mutual funds on a “select list,” 1/3 have 5star ratings, and 2/5 of the remaining funds have 4star ratings. If the remaining 300 funds on the list have 3star ratings, how many funds are on the list?
A. 500 B. 750 C. 1,000 D. 1,200 E. 1,500 Let X are the total funds, then (1/3)x + (2/3)*(2/5)*x are the 5star and 4star funds x (1/3)x + (2/3)*(2/5)*x = 300 (9/15) X = 300 and X = 750 ans is "B"



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Re: Math problem [#permalink]
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08 Oct 2008, 02:08
vivektripathi wrote: albany09 wrote: Of the mutual funds on a “select list,” 1/3 have 5star ratings, and 2/5 of the remaining funds have 4star ratings. If the remaining 300 funds on the list have 3star ratings, how many funds are on the list?
A. 500 B. 750 C. 1,000 D. 1,200 E. 1,500 Let X are the total funds, then (1/3)x + (2/3)*(2/5)*x are the 5star and 4star funds x (1/3)x + (2/3)*(2/5)*x = 300 (9/15) X = 300 and X = 750 ans is "B" Same answer here (B) for me ! only 2/3*3/5 = 300/x and x=750 == Message from GMAT Club Team == This is not a quality discussion. It has been retired. If you would like to discuss this question please repost it in the respective forum. Thank you! To review the GMAT Club's Forums Posting Guidelines, please follow these links: Quantitative  Verbal Please note  we may remove posts that do not follow our posting guidelines. Thank you.










