Question 888350
set up a ratio:
{{{ (( 5/8 )) / 2 = x / 40 }}}
Multiply both sides by {{{ 40 }}}
{{{ 20*( 5/8 ) = x }}}
{{{ x = ( 5/2 )*5 }}}
{{{ x = 12.5 }}}
The model is 12.5 inches long