saiboytosamattN saiboytosamattN

01-11-2015
Mathematics

contestada

Boron is ten years older than his sister. In three years, he will be twice as old as she is now. How old are they now?

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tinmann tinmann

01-11-2015

Boron is 17 and his sister is 7. You know this because half of 20 is 10 and you minus 3 from one of them and take 10 to get the answer^.

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