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Old 09-29-2009   #1
sri340
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Ulani has an older sister and a younger sister. Her older sister is one year more than twice Ulaniís age. Ulaniís younger sister is three years younger than she is. The sum of their three ages is 26. Find Ulaniís age.
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Old 09-30-2009   #2
Mr. Hui


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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
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Old 10-01-2009   #3
athiappan
 
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Quote:
Originally Posted by sri340 View Post
Ulani has an older sister and a younger sister. Her older sister is one year more than twice Ulaniís age. Ulaniís younger sister is three years younger than she is. The sum of their three ages is 26. Find Ulaniís 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.
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Old 02-20-2010   #4
jmw106462

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Not good at algrabra
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