Asked by Darrel
Spencer is 14 years older than his sister Kelly. Three years from now, he will be three times as old as Kelly. How old are they now?
Answers
Answered by
Reiny
Now:
Kelly ---- x
Spencer ---- x+14
3 years from now:
Kelly = x+3
Spencer = x+14+3 = x+17
x+17 = 3(x+3)
solve for x, sub into my definitions
Kelly ---- x
Spencer ---- x+14
3 years from now:
Kelly = x+3
Spencer = x+14+3 = x+17
x+17 = 3(x+3)
solve for x, sub into my definitions
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