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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 ## The 200 seventh graders at John Witherspoon Middle School ##### This topic has 1 expert reply and 1 member reply ### Top Member ## The 200 seventh graders at John Witherspoon Middle School ## Timer 00:00 ## Your Answer A B C D E ## Global Stats Difficult The 200 seventh graders at John Witherspoon Middle School raised 80% of the funds needed for a field trip. The school donated the remaining 20%. When they went to purchase the tickets, however, they were given a 10% bulk rate discount after a$20 processing fee. Faced with an unexpected surplus the students chose to buy each member of the class one cookie and were still left with $18, which they gave to the bus driver. If each of the cookies cost$0.30, how much did the trip cost the school?

A. $40 B.$80
C. $120 D.$160
E. $200 OA D Source: Princeton Review ### Top Member Legendary Member Joined 02 Mar 2018 Posted: 1039 messages Followed by: 2 members Let total cost of trip = n $$n=0.9\left(n-20\right)+0.3\left(200\right)+18$$ $$n=0.9n-18+60+18$$ $$n-0.9n=60$$ $$\frac{0.1n}{0.1}=\frac{60}{0.1}$$ $$n=600$$ Since school paid 20% of n Therefore School paid $$\frac{20}{100}\cdot600=120\ dollar$$ $$answer\ is\ Option\ D$$ ### GMAT/MBA Expert GMAT Instructor Joined 25 Apr 2015 Posted: 2624 messages Followed by: 18 members Upvotes: 43 BTGmoderatorDC wrote: The 200 seventh graders at John Witherspoon Middle School raised 80% of the funds needed for a field trip. The school donated the remaining 20%. When they went to purchase the tickets, however, they were given a 10% bulk rate discount after a$20 processing fee. Faced with an unexpected surplus the students chose to buy each member of the class one cookie and were still left with $18, which they gave to the bus driver. If each of the cookies cost$0.30, how much did the trip cost the school?

A. $40 B.$80
C. $120 D.$160
E. $200 OA D Source: Princeton Review We can let n = the total cost of trip. They were charged: a processing fee of$20, 90% of the remaining n - 20, 200 cookies at $0.3 each. They also paid$18 to the driver; therefore:

n = 20 + 0.9(n - 20) + 0.3(200) + 18

n = 20 + 0.9n - 18 + 60 + 18

0.1n = 80

n = 800

Since the school paid 20% of the total cost of the trip, the school paid 0.2 x 800 = $160. Answer: D _________________ Scott Woodbury-Stewart Founder and CEO scott@targettestprep.com See why Target Test Prep is rated 5 out of 5 stars on BEAT the GMAT. Read our reviews • Get 300+ Practice Questions 25 Video lessons and 6 Webinars for FREE Available with Beat the GMAT members only code • Free Veritas GMAT Class Experience Lesson 1 Live Free Available with Beat the GMAT members only code • 5 Day FREE Trial Study Smarter, Not Harder Available with Beat the GMAT members only code • 1 Hour Free BEAT THE GMAT EXCLUSIVE Available with Beat the GMAT members only code • Magoosh Study with Magoosh GMAT prep Available with Beat the GMAT members only code • Free Trial & Practice Exam BEAT THE GMAT EXCLUSIVE Available with Beat the GMAT members only code • Free Practice Test & Review How would you score if you took the GMAT Available with Beat the GMAT members only code • FREE GMAT Exam Know how you'd score today for$0

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