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Robert is twice as old as Charlotte. Five years ago his age was three times Charlotte's age. Find their present ages.

 Feb 24, 2021
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r = robert now = 2 c

 

5 years ago

 

(r-5) = 3 (c-5)

Sub in r = 2c

 

(2c - 5)=(3c-15)

   10 = c                     r = 2c = 20 y/o

 Feb 24, 2021

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