
Algebra PreAlgebra and Basic Algebra Math Forum 
 LinkBack  Thread Tools  Display Modes 
March 9th, 2017, 12:07 AM  #1 
Newbie Joined: Feb 2017 From: America Posts: 2 Thanks: 0  Quadratic algebra worded equation
Jenny is y² years old and her daughter Allyson is y years old. If jenny lives to the age of 13y, Allyson will be y² years old. How old is Allyson now? (Note: the difference in ages must remain constant) Thanks, I'm struggling on this question 
March 9th, 2017, 01:04 AM  #2 
Senior Member Joined: Sep 2015 From: CA Posts: 923 Thanks: 499 
at present $jp = y^2$ $ap = y$ future $jf = 13y$ $af = y^2$ $jpap = jf  af$ $y^2  y = 13y  y^2$ $2 y^2  14y = 0$ $(2y  14)y = 0$ $2y = 14$ $y = 7$ Allyson is currently $7$ yrs old. Jenny is currently $49$ yrs old. In $42$ yrs Jenny will be $91$ and Allyson will be $49$ 

Tags 
algebra, equation, quadratic, worded 
Thread Tools  
Display Modes  

Similar Threads  
Thread  Thread Starter  Forum  Replies  Last Post 
Worded Quadratic Questions HELP!  jamesbrown  Algebra  6  March 18th, 2016 11:17 AM 
Linear Algebra  Quadratic Forms  Luiz  Linear Algebra  4  November 3rd, 2015 08:17 AM 
Algebra Quadratic Problem  wrightarya  Algebra  2  July 18th, 2014 01:25 PM 
Quadratic Inequations Worded Problems  dutt002  Algebra  2  October 27th, 2011 10:37 PM 
Algebra (Quadratic Equation)  huzi94  Algebra  1  February 17th, 2011 12:38 PM 