Question 620221
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Let *[tex \LARGE x] represent the sister's age now.  Then *[tex \LARGE x\ +\ 4] is the older brother's age now.  10 years from now the sister will be *[tex \LARGE x\ +\ 10] and the brother will be *[tex \LARGE x\ +\ 14], and at that time the sum will be 60, so:


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ (x\ +\ 10)\ +\ (x\ +\ 14)\ =\ 60].


Solve for *[tex \LARGE x], then calculate *[tex \LARGE x\ +\ 4]


John
*[tex \LARGE e^{i\pi}\ +\ 1\ =\ 0]
My calculator said it, I believe it, that settles it
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