
Algebra PreAlgebra and Basic Algebra Math Forum 
 LinkBack  Thread Tools  Display Modes 
April 29th, 2012, 07:14 AM  #1 
Newbie Joined: Feb 2012 Posts: 10 Thanks: 0  Difference of their ages
Mary is younger than her husband, but their ages contain the same two digits. The sum of their ages is 11 times the difference of their ages. How old is Mary?

April 29th, 2012, 08:17 AM  #2 
Senior Member Joined: Jul 2010 From: St. Augustine, FL., U.S.A.'s oldest city Posts: 12,155 Thanks: 465 Math Focus: Calculus/ODEs  Re: Difference of their ages
Let M be Mary's age and H be the age of her husband. If is the tens digit and is the ones digit of Mary's age respectively, then we have: Using the given relationship between their ages, we have: Hence: Mary is 45 years old. 

Tags 
ages, difference 
Thread Tools  
Display Modes  

Similar Threads  
Thread  Thread Starter  Forum  Replies  Last Post 
Find their ages.  Chikis  Elementary Math  1  February 3rd, 2014 05:37 PM 
the difference between  Zbigniew  New Users  1  November 23rd, 2013 09:53 PM 
The product of their ages in the past  Chikis  Algebra  2  March 23rd, 2013 11:11 PM 
Is there a difference between these two?  chocolatesheep  Algebra  1  January 8th, 2013 11:48 PM 
Fractions, Ages, Simple Equations Doubts  sahityasaee  Elementary Math  7  July 20th, 2011 12:57 PM 