SOLUTION: Joshua is 12 yrs old his sister is 3 times as old as he. When Joshua is 23 yrs old how old will his sister be?

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Question 1078609: Joshua is 12 yrs old his sister is 3 times as old as he. When Joshua is 23 yrs old how old will his sister be?
Answer by rfer(16322) About Me  (Show Source):
You can put this solution on YOUR website!
sister =36
23-12=11
36+11=47 yrs