Решение
Варианты расходов:
=
=
=
Ответ
6800
![S[0] = `*`(350, .7)](im/m_370.gif){kind=small}
= ![S[0] = 245.0](im/m_371.gif){kind=small}
![S[200] = `+`(213, `*`(150, .5))](im/m_372.gif){kind=small}
= ![S[200] = 288.0](im/m_373.gif){kind=small}
![S[800] = 732](im/m_374.gif){kind=small}
= ![S[800] = 732](im/m_375.gif){kind=small}
Ответ = = = Ответ