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8 years
Given:
Sara just turned 18 years old.
She spent [tex]\frac{4}{9}[/tex] of her life living in Rochester, NY.
Question:
How many years did Sara live in Rochester?
The Process:
From the information above, we make a suitable diagram as follows:
[tex]\boxed{\cdot}\boxed{\cdot}\boxed{\cdot}\boxed{\cdot} = ? \ years [/tex]
Four of the nine parts are the question. The nine full parts below are Sara's ages.
[tex]\boxed{\cdot}\boxed{\cdot}\boxed{\cdot}\boxed{\cdot}\boxed{\cdot}\boxed{\cdot}\boxed{\cdot}\boxed{\cdot}\boxed{\cdot} = 18 \ years [/tex]
Let us calculate how many years did Sara live in Rochester.
[tex]\boxed{ \ = \frac{4}{9} \times 18 \ }[/tex]
We crossed out 9 and 18.
[tex]\boxed{ \ = 4 \times 2 \ }[/tex]
Thus Sara has lived in Rochester for [tex]\boxed{\boxed{ \ 8 \ years \ }}[/tex]
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Quick Steps:
[tex]\boxed{ \ = \frac{4}{9} \times 18 \ }[/tex]
[tex]\boxed{ \ = 4 \times 2 \ }[/tex]
[tex]\boxed{\boxed{ \ 8 \ years \ }}[/tex]
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