Question 1002657
Let {{{ x }}} = her present age
{{{ x + 16 }}} = her age in 16 yrs
{{{ x - 12 }}} = her age 12 years ago
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given:
{{{ x + 16 = 2*( x - 12 ) }}}
{{{ x + 16 = 2x - 24 }}}
{{{ x = 16 + 24 }}}
{{{ x = 40 }}}
she is presently 40
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check:
{{{ x + 16 = 2*( x - 12 ) }}}
{{{ 40+ 16 = 2*( 40 - 12 ) }}}
{{{ 56 = 2*28 }}}
{{{ 56 = 56 }}}
OK