Live GMAT classes with Target Test Prep start Nov 21 and Nov 22. First class free.

See classes
Target Test Prep · GMAT

Choose how you want to prepare

Learn live with an expert or move at your own pace. Every option includes the complete TTP study system.

Newsweek Readers’ Choice Awards 2026 winner: Target Test Prep, #1 Test Prep

Target Test Prep was voted #1 Best Test Prep in the 2026 Newsweek Readers’ Choice™ Awards.

★★★★★5.0563 reviews
GMATLiveTeachStarts Nov 22
Josh Braslow, Target Test Prep GMAT expert
LIVE ONLINE CLASSES

Get Ready for GMAT Test Day Faster with Live Online Classes

with Josh Braslow, 20+ years in test prep

Nov 22 · Josh Braslow
Sun · 9:30 AM to 12:30 PM ET
Included
40 hours of live online classes + 6 months of TTP OnDemand
  • Attend the first class for free
  • Every class is recorded, so you never fall behind
View classes & enroll
Limited seats availableTarget Test Prep
EALiveTeachOnDemandStart anytime
EXECUTIVE ASSESSMENT

Target Test Prep EA OnDemand

Self-paced EA prep. Study on your schedule.

EXECUTIVE ASSESSMENT

with

165+ EA score guarantee
$05-day trial no automatic billing
Schedule
Included
40 hours of live online classes plus six months of access to the complete TTP EA OnDemand course.
  • 165+ EA Score Guarantee
  • 4,100+ Quant, Verbal, and Integrated Reasoning practice questions
  • 400+ hours of in-depth video lessons
  • 3,000+ step-by-step video solutions
View EA class & enroll Start free 5-day trial
Limited cohort · enrollment openTrial includes full course accessTarget Test Prep
GMATOnDemandStart anytime
SELF-PACED MASTERCLASS

Target Test Prep GMAT OnDemand

Complete access from day one. Study on your schedule.

715+ score guarantee
$0to start then $127/mo
  • Personalized study plan and analytics
  • Thousands of lessons and practice questions

A book store bought copies of a new book by a popular author

Expert replies
by Mike@Magoosh » Wed Jan 08, 2014 12:03 pm
A book store bought copies of a new book by a popular author, in anticipation of robust sales. The store bought 400 copies from their supplier, each copy at wholesale price W. The store sold the first 150 copies in the first week at 80% more than W, and then over the next month, sold a 100 more at 20% more than W. Finally, to clear shelf space, the store sold the remaining copies to a bargain retailer at 40% less than W. What was the bookstore’s net percent profit or loss on the entire lot of 400 books?
30% loss
10% loss
10% profit
20% profit
60% profit


For a page of percent practice problems, as well as the OA & OE for this particular question, see:
https://magoosh.com/gmat/2013/gmat-quant ... -percents/

Mike :-)
Magoosh GMAT Instructor
https://gmat.magoosh.com/
Join the discussion
Source: — Problem Solving |

by vipulgoyal » Wed Jan 08, 2014 9:48 pm
let the whole sale pric eof one book is 10

150x18 + 100x12 + 150x6 - 4000 ---> 4800 - 4000 --> 800 pofit

profit% 20
Join the discussion

by Milovan » Sun Jan 12, 2014 6:18 am
We can look at profit or loss as a weighted average.

1st: 150 books sold per 1,8W price
2nd: 100 books sold per 1,2W price
3rd: 150 books sold per 0,6W price

(3*1,8W + 2*1,2W + 3*0,6W) / 8 = 9,6W / 8 = 1,2W

To find total profit we subtract W and get 0,2W which yields 20% profit. The correct answer is D
Milovan Arnaut
Join the discussion