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23 October, 06:07

Joshua is 12 years old and his sister is three times as old as he. when joshua is 23 years old, how old will his sister be?

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  1. 23 October, 06:11
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    12 x 3 = 36. So he is currently 12 and she is 36. That means she is 24 years older than him. Therefore when he is 23, she will be 47
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