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40407????????

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???? СA????????A?????????B??????????C???????????D?????﹥?????E??

???????????????A=(C-100)xB÷900+B

E=DX0.625 X2

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???????????1020 ???????200 ???﹥??860

A=(200-100)x1020÷900+1020

A=100x1020÷900+1020

A=102000÷900+1020

A=113+1020

A=1133

E=860x0.625x2

E=537.5X2

E=1075

?????????=1133+1075=2208(98%?????)????2207

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