Question 810758
The wording is tough. By the height of
the horizon, i think they mean from the 
bottom of the painting to where the
sky meets the land.
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Let {{{ x }}} = the height of the land , or from
bottom of painting to where land meets sky
{{{ 104 - x }}} = the height of the sky , or
from horizon to top of painting
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{{{ 8/5 = x / ( 104 - x ) }}}
Multiply both sides by {{{ 5*( 104 - x ) }}}
{{{ 8*( 104-x ) = 5x }}}
{{{ 832 - 8x = 5x }}}
{{{ 13x = 832 }}}
{{{ x = 64 }}}
The horizon is 64 in high
check:
{{{ 8/5 = x / ( 104 - x ) }}}
{{{ 8/5 = 64 / ( 104 - 64 ) }}}
{{{ 8/5 = 64 / 40 }}}
{{{ 8/5 = 8/5 }}}
OK