()比75多20%,75比()少20%

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()比75多20%,75比()少20%
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()比75多20%,75比()少20%
()比75多20%,75比()少20%

()比75多20%,75比()少20%
()比75多20%即该数是75的百分之一百二十;该数为75x120%=90所以(90)比75多20%75比()少20%即75是该数的百分之八十;该数为75/80%=93.75所以75比(93.75)少20%