{"id":8730,"date":"2011-09-15T02:00:43","date_gmt":"2011-09-15T09:00:43","guid":{"rendered":"https:\/\/gmatclub.com\/blog\/?p=8730"},"modified":"2011-09-15T04:28:18","modified_gmt":"2011-09-15T11:28:18","slug":"gmat-question-of-the-day-sep-15-mixture-problem-and-critical-reasoning","status":"publish","type":"post","link":"https:\/\/gmatclub.com\/blog\/gmat-question-of-the-day-sep-15-mixture-problem-and-critical-reasoning\/","title":{"rendered":"GMAT Question of the Day (Sep 15): Mixture Problem and Critical Reasoning"},"content":{"rendered":"<p><strong>Math (PS)<\/strong><\/p>\n<p>Some part of a 50% solution of acid was replaced with an equal amount of 30% solution of acid. If, as a result, 40% solution of acid was obtained, what part of the original solution was replaced?<\/p>\n<p>(A) <img src='https:\/\/s0.wp.com\/latex.php?latex=%5Cfrac%7B1%7D%7B5%7D&#038;bg=ffffff&#038;fg=000000&#038;s=0' alt='\\frac{1}{5}' title='\\frac{1}{5}' class='latex' \/><br \/>\n(B) <img src='https:\/\/s0.wp.com\/latex.php?latex=%5Cfrac%7B1%7D%7B4%7D&#038;bg=ffffff&#038;fg=000000&#038;s=0' alt='\\frac{1}{4}' title='\\frac{1}{4}' class='latex' \/><br \/>\n(C) <img src='https:\/\/s0.wp.com\/latex.php?latex=%5Cfrac%7B1%7D%7B2%7D&#038;bg=ffffff&#038;fg=000000&#038;s=0' alt='\\frac{1}{2}' title='\\frac{1}{2}' class='latex' \/><br \/>\n(D) <img src='https:\/\/s0.wp.com\/latex.php?latex=%5Cfrac%7B3%7D%7B4%7D&#038;bg=ffffff&#038;fg=000000&#038;s=0' alt='\\frac{3}{4}' title='\\frac{3}{4}' class='latex' \/><br \/>\n(E) <img src='https:\/\/s0.wp.com\/latex.php?latex=%5Cfrac%7B4%7D%7B5%7D&#038;bg=ffffff&#038;fg=000000&#038;s=0' alt='\\frac{4}{5}' title='\\frac{4}{5}' class='latex' \/><\/p>\n<div style=\"background-color: rgb(141, 179, 226); border-top: 4px solid rgb(0, 0, 0); border-bottom: 4px solid rgb(0, 0, 0); padding: 5px; margin-left: 20px; font-size: 15px; font-family: Gergia,serif; font-weight: bold\">\n<div style=\"font-size: 19px; color: rgb(255, 255, 255); margin-bottom: 10px; padding-left: 10px\">GMAT Daily Deals<\/div>\n<ul>\n<li style=\"padding: 0pt 0pt 10px 20px; color: rgb(255, 255, 255); list-style-type: disc\">UPenn Graduate Scores 740, Thanks GMATPill (Video) - <a href=\"https:\/\/gmatclub.com\/static\/forward.php?r=https:\/\/www.gmatpill.com\/gmat-prep-about-the-gmat\/upenn-graduate-scores-740-gmatpill\/\" style=\"color: rgb(0, 0, 255);\"><u>See more!<\/u><\/a><\/li>\n<li style=\"padding: 0pt 0pt 10px 20px; color: rgb(255, 255, 255); list-style-type: disc\">Enroll in MBA Prep School's 2011\/2012 season pass for only $97. Discount code: GC2011Season. Offer valid until 9\/30\/11. <a href=\"https:\/\/gmatclub.com\/static\/forward.php?r=https:\/\/mbaprepschool.com\/pricing\" style=\"color: rgb(0, 0, 255);\"><u>Sign up!<\/u><\/a><\/li>\n<li style=\"padding: 0pt 0pt 0px 20px; color: rgb(255, 255, 255); list-style-type: disc\">48-hour Turn-Around Special For 1 Application: $1395. Mention code GMATCL611. <a href=\"https:\/\/gmatclub.com\/static\/forward.php?r=https:\/\/mbaadmit.com\/\" style=\"color: rgb(0, 0, 255);\"><u>Sign up!<\/u><\/a><\/li>\n<\/ul>\n<\/div>\n<p><\/p>\n<p><strong>Verbal (CR)<\/strong><\/p>\n<p>According to a recent research study, more than 90% percent of graduates of private high schools in a certain county continue their education in college. By contrast, only 65% of graduates of public high schools subsequently pursue college education. Therefore, if parents in the county wish to increase the likelihood that their children will attend college, they should send them to private rather than public schools. <\/p>\n<p>Which of the following statements would most seriously weaken the argument above? <\/p>\n<p>(A) Graduates of private schools typically score higher on standardized tests and other tests of academic achievement.<br \/>\n(B) While private schools are typically very expensive, attendance of public school is free for the residents of the county.<br \/>\n(C) In comparison with graduates of private schools, a substantially greater proportion of public school graduates receive need-based financial aid for their college education.<br \/>\n(D) In comparison with private schools, public schools provide more opportunities for student involvement in sports and other athletic activities, which almost always increase the likelihood of students\u2019 acceptance to colleges.<br \/>\n(E) Since most public schools are located in rural areas of the county populated primarily by farmers, nearly 30% of students from public high schools choose to pursue farming occupations rather than apply to colleges.<\/p>\n<div style=\"color:#cecece\">\nAnswers to the questions: <strong>C<\/strong>, <strong>E<\/strong><br \/>\nFor explanations please see these threads: <a href=\"https:\/\/gmatclub.com\/forum\/m25-75372.html\">math<\/a> and <a href=\"https:\/\/gmatclub.com\/forum\/cr-public-schools-68205.html\">verbal<\/a>\n<\/div>\n<p><\/p>\n<p><strong>Like these questions?<\/strong> Get the GMAT Club question collection: <a href=\"https:\/\/gmatclub.com\/tests\/\">online at GMAT Club<\/a> OR <a href=\"https:\/\/www.amazon.com\/gp\/redirect.html?ie=UTF8&location=http%3A%2F%2Fwww.amazon.com%2Fgp%2Fentity%2FGMAT-Club%2FB0048PPF3U%3Fie%3DUTF8%26ref_%3Dntt_athr_dp_pel_1&tag=gmatclub-20&linkCode=ur2&camp=1789&creative=390957\">on your Kindle<\/a> OR <a href=\"https:\/\/click.linksynergy.com\/fs-bin\/stat?id=PJTlq5NYqfE&offerid=146261&type=3&subid=blog&tmpid=1826&RD_PARM1=http%253A%252F%252Fitunes.apple.com%252Fus%252Fapp%252Fgmat-toolkit%252Fid328345537%253Fmt%253D8%2526uo%253D6%2526partnerId%253D30\">on your iPhone\/iPad<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Math (PS) Some part of a 50% solution of acid was replaced with an equal amount of 30% solution of acid. If, as a result, 40% solution of acid was&#8230;<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[152,9,721,717],"tags":[],"class_list":["post-8730","post","type-post","status-publish","format-standard","hentry","category-gmat-tests","category-gmat","category-critical-reasoning-gmat","category-problem-solving-gmat","entry"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/gmatclub.com\/blog\/wp-json\/wp\/v2\/posts\/8730","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/gmatclub.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/gmatclub.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/gmatclub.com\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/gmatclub.com\/blog\/wp-json\/wp\/v2\/comments?post=8730"}],"version-history":[{"count":1,"href":"https:\/\/gmatclub.com\/blog\/wp-json\/wp\/v2\/posts\/8730\/revisions"}],"predecessor-version":[{"id":8731,"href":"https:\/\/gmatclub.com\/blog\/wp-json\/wp\/v2\/posts\/8730\/revisions\/8731"}],"wp:attachment":[{"href":"https:\/\/gmatclub.com\/blog\/wp-json\/wp\/v2\/media?parent=8730"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/gmatclub.com\/blog\/wp-json\/wp\/v2\/categories?post=8730"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/gmatclub.com\/blog\/wp-json\/wp\/v2\/tags?post=8730"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}