
Algebra PreAlgebra and Basic Algebra Math Forum 
 LinkBack  Thread Tools  Display Modes 
August 12th, 2018, 04:13 PM  #1 
Newbie Joined: Aug 2018 From: Singapore Posts: 1 Thanks: 0  Reciprocal of x/y  1
Which of the following equals the reciprocal of x/y  1, where x/y  1 does not equal zero? (A) 1/x  y (B) y/x (C) y/(x  1) (D) x/(xy  1) (E) y/(xy  1) My answer is x/y  1 = (x  y)/y and its reciprocal is y/(x  y) but I am not able to get the right answer from the choices. Please help. 
August 12th, 2018, 05:15 PM  #2  
Math Team Joined: May 2013 From: The Astral plane Posts: 2,156 Thanks: 878 Math Focus: Wibbly wobbly timeywimey stuff.  Quote:
Dan  
August 13th, 2018, 03:56 PM  #3 
Senior Member Joined: Feb 2010 Posts: 706 Thanks: 140  If you view this as the fraction $\displaystyle x/y$ multiplied by $\displaystyle 1$ then B could be correct. On the other hand, who would interpret it this way?

August 13th, 2018, 04:06 PM  #4 
Senior Member Joined: Aug 2012 Posts: 2,306 Thanks: 706  I tried it as if it were intended to be x/(y  1) since this is a very common mistake. But that doesn't help, none of the answers work.


Tags 
linear algebra, reciprocal, x or y 
Thread Tools  
Display Modes  

Similar Threads  
Thread  Thread Starter  Forum  Replies  Last Post 
The Sum of A Number & It's Reciprocal...  Indigo28  Algebra  1  May 5th, 2017 09:39 PM 
Reciprocal Rule  jbloom04  Calculus  2  August 3rd, 2016 09:03 AM 
Reciprocal graphs  taylor_1989_2012  Algebra  2  March 29th, 2013 02:46 AM 
The Reciprocal Superexponential Sum  mathbalarka  Calculus  0  March 9th, 2013 10:11 AM 
Expected Value of Reciprocal  DonkeyKong  Advanced Statistics  1  November 19th, 2012 02:56 AM 