algebra help - XP Math - Forums

 XP Math - Forums algebra help

 09-29-2009 #1 sri340 Guest   Posts: n/a algebra help Ulani has an older sister and a younger sister. Her older sister is one year more than twice Ulani’s age. Ulani’s younger sister is three years younger than she is. The sum of their three ages is 26. Find Ulani’s age.
 09-30-2009 #2 Mr. Hui Last Achievements     Join Date: Mar 2005 Posts: 10,650 Let U = Ulani's age and O = Older sister's age Y = Younger sister's age O = 2U + 1 Y = U - 3 U + (2U + 1) + (U - 3) = 26 Solving for U. 4U - 2 = 26 U = 7 O = 15 Y = 4 __________________ Do Math and you can do Anything!
10-01-2009   #3
athiappan

Join Date: Oct 2009
Posts: 1

Quote:
 Originally Posted by sri340 Ulani has an older sister and a younger sister. Her older sister is one year more than twice Ulani’s age. Ulani’s younger sister is three years younger than she is. The sum of their three ages is 26. Find Ulani’s age.
I think you need to try more problems based on single variable.

I suggest you try problems from www.mathocean.com which contains lot of word problems based on single variable.

 02-20-2010 #4 jmw106462 Last Achievements     Join Date: Feb 2010 Posts: 388 Not good at algrabra

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