Question 1125635
<pre>
Mother           3x
Tina             x
Meena            x-3
</pre>

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Tina's mother is,... four times as old as tina's sister Meena,
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{{{3x=4(x-3)}}}

-

{{{3x=4x-12}}}

{{{x=12}}}

<pre>
PERSON     AGE
Mother      36
Tina        12
Meena        9
</pre>