????, ????, ?????? ???? ??? ‘?? 70%+??? 30%’? ??? ???? ???. ???? ??(??????)? ??? ??? ??? ???? ??? ????.
?? ??? ?? ??? ????? ?? ?? 30%, ?? 15%, ??? 35%, ???? 2?? ? 10%? ????, ????? ?? 15%, ?? 35%, ??? 30%, ???? 2?? ? 10%? ????. ? ??????? ?? ‘?’?? ????. ?????? ?? 50%, ??? 50%? ????. ?? ??, ??, ??? ??? ????? ???? ????? ??? ??? ????.
??? ????
???? 1?? 20%, 2?? 40%, 3?? 40%? ????. ?? ??? 90%, ?? ??? 10%? ????.