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Nycgrl wrote:Let the total amount of mixture be 20g => 16g almonds + 4G walnuts.
Now 75% of almonds are left therefore 25% are removed so almonds removed = .25*16 = 4.
CORRECTION
percent of almonds removed 4/20 * 100 = 20%
Its C
I don't understand what I did wrong. I will address two points of view.wawatan wrote:A certain mixture of nuts consists of 4 parts almonds to 1 part walnuts, by weight. By removing some of the almonds, the remained nuts consist 75 percent of almonds, by weight. What percent of the almonds were removed?
(A) 10%
(B) 12.5%
(C) 20%
(D) 25%
(E) 30%
Well, there's something wrong with the wording of the question; it talks about 'remained nuts' which is not a phrase you'd ever see on the GMAT. So perhaps some important wording in the question has been lost in the transcription here. But, as presented, I interpret the question exactly as beeparoo does above, and the correct answer should be 25%, not 20%. So I don't think you've done anything wrong!beeparoo wrote:I don't understand what I did wrong. I will address two points of view.wawatan wrote:A certain mixture of nuts consists of 4 parts almonds to 1 part walnuts, by weight. By removing some of the almonds, the remained nuts consist 75 percent of almonds, by weight. What percent of the almonds were removed?
(A) 10%
(B) 12.5%
(C) 20%
(D) 25%
(E) 30%
Point #1: The sentence, "By removing some of the almonds, the remained nuts consist 75 percent of almonds, by weight", indicates (to ME) that the remaining almonds are 75% of total nuts after removal of almonds.
If I compare approach to NYCgrl, she interprets that, 'after removal, 75% of original almonds (not total nuts!) remain'.
Point #2: To address the Question Stem, "What percent of the almonds were removed?", my view is to solve for
(removed almonds)/(original amt of almonds).
But again, here, NYCgrl differs by calculating for
(removed almonds)/(total original nuts) - which I would have NEVER thought the question was asking...
++
Did anyone else experience similar conflict in the interpretation of this problem??
