Question 303717
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Let *[tex \Large x] represent the daughter's age now.  Then the parent is *[tex \Large 3x] years old now.


Five years ago, the daughter was *[tex \Large x\ -\ 5].  Five years ago the parent was *[tex \Large 3x\ -\ 5].


Four times the daughter's age five years ago is equal to the parent's age five years ago.


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ 4(x\ -\ 5)\ =\ 3x\ -\ 5]


Just solve for *[tex \Large x].  Remember to plug your answer back into all of the expressions to check.


John
*[tex \LARGE e^{i\pi} + 1 = 0]
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