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100 points for $49 worth of Veritas practice GMATs FREE VERITAS PRACTICE GMAT EXAMS Earn 10 Points Per Post Earn 10 Points Per Thanks Earn 10 Points Per Upvote ## During a spring season, a certain glacier surged at . . . . tagged by: Vincen ##### This topic has 3 expert replies and 0 member replies ### Top Member ## During a spring season, a certain glacier surged at . . . . During a spring season, a certain glacier surged at the rate of 1 mile per 100 days. What was its rate in feet per hour? (1 mile = 5,280 feet) A. 5/11 B. 11/5 C. 55 D. 110 E. 22,000 The OA is the option B. How can I find the rate? What is the formula I should use to make the transformation? Experts, can you give me some help. Thanks. ### GMAT/MBA Expert GMAT Instructor Joined 04 Oct 2017 Posted: 551 messages Followed by: 11 members Upvotes: 180 Hello Vincen. Let's take a look at your question. glacier surged at the rate of 1 mile per 100 days, it implies that his rate is $$\frac{1}{100}\ \frac{miles}{days}.$$ Now, we have to convert from miles to feet and from days to hours. Now, 1 mile = 5,280 feet and 1 day = 24 hours. Hence, the rate is $$\frac{1}{100}\ \frac{miles}{days}\cdot\frac{5,280}{1}\ \frac{feet}{miles}\ \cdot\ \frac{1}{24}\ \frac{day}{hours}=\frac{11}{5}\frac{feet}{hours}.$$ This is why the correct option is B. I hope this answer can help you. Feel free to ask me again if you have a doubt. Regards. _________________ GMAT Prep From The Economist We offer 70+ point score improvement money back guarantee. Our average student improves 98 points. Free 7-Day Test Prep with Economist GMAT Tutor - Receive free access to the top-rated GMAT prep course including a 1-on-1 strategy session, 2 full-length tests, and 5 ask-a-tutor messages. Get started now. ### GMAT/MBA Expert Elite Legendary Member Joined 23 Jun 2013 Posted: 10197 messages Followed by: 497 members Upvotes: 2867 GMAT Score: 800 Hi Vincen, We're told that a certain glacier surged at the rate of 1 mile in 100 days. We're asked for its rate in feet per hour? (1 mile = 5,280 feet). Based on how the answer choices are 'spaced out', you can answer this question with just a little math and some estimation. To start, there are 24 hours in 1 day, so there are (24)(100) = 2400 hours of travel in 100 days. Since the iceberg traveled 1 mile, its rate was: 5280 feet/2400 hours 4800 is twice 2400, so this iceberg traveled a little more than 2 feet per day. There's only one answer that's a little more than 2.... Final Answer: B GMAT assassins aren't born, they're made, Rich _________________ Contact Rich at Rich.C@empowergmat.com ### GMAT/MBA Expert GMAT Instructor Joined 09 Apr 2015 Posted: 1465 messages Followed by: 19 members Upvotes: 39 Vincen wrote: During a spring season, a certain glacier surged at the rate of 1 mile per 100 days. What was its rate in feet per hour? (1 mile = 5,280 feet) A. 5/11 B. 11/5 C. 55 D. 110 E. 22,000 Since 1 mile = 5280 feet and since 100 days is 100 x 24 = 2400 hours, the rate in feet per hour is: 5280/2400 = 528/240 = 66/30 = 11/5 Answer: B _________________ Jeffrey Miller Head of GMAT Instruction jeff@targettestprep.com See why Target Test Prep is rated 5 out of 5 stars on BEAT the GMAT. Read our reviews • FREE GMAT Exam Know how you'd score today for$0

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