
New Users Post up here and introduce yourself! 
 LinkBack  Thread Tools  Display Modes 
September 16th, 2017, 08:47 AM  #1 
Newbie Joined: Sep 2017 From: Italy Posts: 1 Thanks: 0  Maths question. Please answer it is driving me crazy
Ed has a very mixed DVD collection: of his 100 DVDs: ... 70 are DVD5 and 30 are DVD9 ..... 80 are region 2, 15 are region 1, and 5 are region 4 .... 85 are in english, 5 are in french, and 10 are in german What is the smallest number of DVD5 region 2 English Language disks that there could be in his collection? A. 35 B. 40 C. 50 D. 55 E. 70 
September 16th, 2017, 09:36 AM  #2 
Math Team Joined: Jul 2013 From: काठमाडौं, नेपाल Posts: 842 Thanks: 60 Math Focus: सामान्य गणित 
70 DVD5 80 region 2 85 english 30 are not DVD5, let all of them be region 2. Therefore, 50 (8030) are DVD5 and region 2. 50 are not DVD5 and region 2, let all of them be English. Therefore, 35 (8550) are DVD5 and region 2 and English. Last edited by MATHEMATICIAN; September 16th, 2017 at 09:38 AM. 

Tags 
answer, crazy, driving, maths, question 
Thread Tools  
Display Modes  

Similar Threads  
Thread  Thread Starter  Forum  Replies  Last Post 
u substitution driving me crazy  dthiaw  Calculus  1  May 23rd, 2017 03:59 PM 
I have this homework that is driving me crazy  DANDIS  Advanced Statistics  2  December 24th, 2011 01:12 PM 
An easy equation driving me crazy  failiure  Algebra  9  August 7th, 2011 09:26 AM 
Trigonomic Identity!! Driving me CRAZY  wowbringer  Algebra  3  January 28th, 2011 06:09 PM 
THIS QUESTION IS DRIVING ME CRAZY.. PLZ HELP !!  kzeidan  Algebra  3  January 25th, 2009 12:33 PM 