Question 1150490
Let {{{ x }}} = Colin's age now
{{{ x + 12 }}} = Paul's age now
{{{ x - 3 }}} = Caroline's age now
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{{{ x + ( x + 12 ) + ( x - 3 ) = 87 }}}
{{{ 3x + 9 = 87 }}}
{{{ 3x = 78 }}}
{{{ x = 26 }}}
and
{{{ x + 12 = 38 }}}
and
{{{ x - 3 = 23 }}}
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The youngest is Caroline
who is 23
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check:
{{{ 26 + 38 + 23 = 87 }}}
{{{ 87 = 87 }}}
OK