SOLUTION: A boy is 6years old and his sister is twice as old.when the boy is 10years old,how old his sister??

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Question 798956: A boy is 6years old and his sister is twice as old.when the boy is 10years old,how old his sister??
Answer by Finavon(81) About Me  (Show Source):
You can put this solution on YOUR website!
Now Boy 6; Sister 2*6= 12
Boy will be 10 in 10-6= 4 years time
In 4 years time, sister will be 12+4= 16