Question 732898
{{{ a = s + 4 }}}
{{{ t = 5s }}}
{{{ a + s + t = 64 }}}
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By substitution,
{{{ s + 4 + s + 5s = 64 }}}
{{{ 7s = 60 }}}
{{{ s = 8.57 }}}
{{{ t = 5*8.57 }}}
{{{ t = 42.85 }}}
{{{ a = s + 4 }}}
{{{ a = 8.57 + 4 }}}
{{{ a = 12.57 }}}
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Simon is 8 yrs 6 mos 25 days approximately
check:
{{{ a + s + t = 64 }}}
{{{ 12.57 + 8.57 + 42.85 = 64 }}}
{{{ 63.99 = 64 }}}
close enough