Question 1002002
Let {{{ x }}} = download size for the standard versions
{{{ 4991 - x }}} = download size for high quality versions
{{{ 4*4.8 = 19.2 }}} = downloads of high quality versions
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{{{ 2.5 / 19.2 = x / ( 4991 - x ) }}}
{{{ 2.5*( 4991 - x ) = x*19.2 }}}
{{{ 12477.5  - 2.5x = 19.2x }}}
{{{ 21.7x = 12477.5 }}}
{{{ x = 575 }}}
there were 575 downloads of the standard version
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check:
{{{ 2.5 / 19.2 = x / ( 4991 - x ) }}}
{{{ 2.5 / 19.2 = 575 / ( 4991 - 575 ) }}}
{{{ 2.5 / 19.2 = 575 / 4416 }}}
{{{ .13021 = .13021 }}}
OK