Question 1198730
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Sixteen year old Amelia is four times older than her brother Theodore. 
How old will Amelia be when she's twice as old?
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        The form  " four times older than "  is never used in  Math problem written in  English,

        since this form is ambiguous in  English.


        The form  " four times as old as "  should be used in this problem in this context.



<pre>
Amelia is 16; hence Theodore is 16/4 = 4.


Let x be "in how many years".


Write equation as you read the problem

    16+x = 2*(4+x).


Simplify and find x

    16 + x = 8 + 2x

    16 - 8 = 2x - x

       8   =    x


<U>ANSWER</U>.  In 8 years.  Amelia will be 16+8 = 24 years old then.
</pre>

Solved.