SOLUTION: John is x years old and his sister Jane is (5x-18)years old. Given that Jane is thrice as old as John, find the age of jane

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Question 1083587: John is x years old and his sister Jane is (5x-18)years old. Given that Jane is thrice as old as John, find the age of jane
Answer by MathLover1(20849) About Me  (Show Source):
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John is x years old and
his sister Jane is %285x-18%29years old
Given that Jane is thrice as old as John: so, %285x-18%29=3x
5x-18=3x
5x-3x=18
2x=18
x=9
Jane is %285x-18%29=5%2A9-18=45-18=highlight%2827%29 years old