Question 1153213
Let {{{ k }}} = constant of proportionality
Let {{{ n }}} = videos per week sold at lower price
-----------------------------------------------------
{{{ 570 = k*( 1/17.4 ) }}}
{{{ k = 570 / 17.4 }}}
{{{ k = 32.76 }}}
-------------------------
{{{ n = k*( 1/13.1 ) }}}
{{{ n = 32.76*( 1/13.1 ) }}}
{{{ n = 2.5 }}}
2.5 videos per week
In whole numbers, 5 videos every 2 weeks
------
get a 2nd opinion if needed