We invite you to test your GMAT knowledge for a chance to win! Each week, we will post a new Challenge Problem for you to attempt. If you submit the correct answer, you will be entered into that week’s drawing for a free Manhattan GMAT Prep item. Tell your friends to get out their scrap paper and start solving!<\/p>\n
Here is this week’s problem:<\/p>\n
The ratio, by weight, of the four ingredients A, B, C, and D of a certain mixture is 4:7:8:12. The mixture will be changed so that the ratio of A to C is quadrupled and the ratio of A to D is decreased. The ratio of A to B will be held constant. If B will constitute 20% of the weight of the new mixture, by approximately what percent will the ratio of A to D be decreased?<\/p><\/blockquote>\n
<\/p>\n
To see the answer choices, and to submit your answer, visit our Challenge Problem Showdown<\/a> page on our site.<\/p>\n
Discuss this week’s problem with like-minded GMAT takers on our Facebook page<\/a>.<\/p>\n
The weekly winner, drawn from among all the correct submissions, will receive One Year of Access to our\u00a0Challenge Problem Archive<\/a>, AND the GMAT Navigator<\/a>, AND Our Six Computer Adaptive Tests<\/a> ($92 value).<\/p>\n","protected":false},"excerpt":{"rendered":"
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