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Of the mutual funds on a select list, 1/3 have 5-star [#permalink]

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06 Oct 2008, 07:38

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Of the mutual funds on a “select list,” 1/3 have 5-star ratings, and 2/5 of the remaining funds have 4-star ratings. If the remaining 300 funds on the list have 3-star ratings, how many funds are on the list?

Of the mutual funds on a “select list,” 1/3 have 5-star ratings, and 2/5 of the remaining funds have 4-star ratings. If the remaining 300 funds on the list have 3-star ratings, how many funds are on the list?

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Of the mutual funds on a “select list,” 1/3 have 5-star ratings, and 2/5 of the remaining funds have 4-star ratings. If the remaining 300 funds on the list have 3-star ratings, how many funds are on the list?

Of the mutual funds on a “select list,” 1/3 have 5-star ratings, and 2/5 of the remaining funds have 4-star ratings. If the remaining 300 funds on the list have 3-star 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 5-star and 4-star funds

Of the mutual funds on a “select list,” 1/3 have 5-star ratings, and 2/5 of the remaining funds have 4-star ratings. If the remaining 300 funds on the list have 3-star 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 5-star and 4-star 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