Question 1047196
Let {{{ C }}} = production costs
Let {{{ S }}} = income from sales of books
Let {{{ n }}} = number of books sold
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(1) {{{ C = 11n + 15210 }}}
(2) {{{ S = 18.5n }}}
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Set {{{ C = S }}}
{{{ 11n + 15210 = 18.5n }}}
{{{ 7.5n = 15210 }}}
{{{ n = 2028 }}}
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The publisher must sell 2028 books so
that cost = money from sales