Question 720735
Add {{{ x }}} to both ages and make the sum = 150
{{{ 34 + x + 68 + x = 150 }}}
{{{ 2x + 102 = 150 }}} 
{{{ 2x = 48 }}} answer
{{{ x = 24 }}}
In 24 years their ages will add up to 150
check:
{{{ 34 + 24 = 58 }}}
{{{ 68 + 24 = 92 }}}
{{{ 58 + 92 = 150 }}}
OK