Question 961884
Let {{{ x }}} = the girl's age
{{{ 2x }}} = her mother's age
{{{ 2x + 5 }}} = her father's age
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{{{ x + 2x + 2x + 5 = 100 }}}
{{{ 5x + 5 = 100 }}}
{{{ 5x = 95 }}}
{{{ x = 19 }}}
The girl is 19