甲比乙多25%,乙:甲=( ):( ),乙比甲少( )% 为什么?

\u7532\u6876\u6cb9\u6bd4\u4e59\u6876\u6cb9\u591a25%,\u7532\u6876\u6cb9\u662f\u4e59\u6876\u6cb9\u7684( )%,\u4e59\u6876\u6cb9\u6bd4\u7532\u6876\u6cb9\u5c11( )%\u3002

\u50cf\u8fd9\u79cd\u9898\u76ee\uff0c\u53ef\u4ee5\u5f88\u7b80\u5355\u7684\u4ece\u7279\u4f8b\u6765\u89e3\u51b3\u3002\u6bd4\u5982\u8bbe\u4e59\u6876\u4e3a4\uff0c\u5219\u7532\u5c31\u662f5\uff0c\u90a3\u4e48\u540e\u9762\u7684\u5c31\u7b80\u5355\u4e86\uff1a\u7532\u58eb\u4e59\u76845/4\uff1b\u4e59\u6bd4\u7532\u5c111/5

\uff081\uff09\u5982\u679c\u7532\u6bd4\u4e59\u5c1110%\uff0c\u90a3\u4e48\u4e59\u6bd4\u7532\u591a10% \uff08\u9519 \uff09
\uff082\uff09\u5982\u679c\u7532\u6bd4\u4e59\u591a25%\uff0c\u90a3\u4e48\u4e59\u6bd4\u7532\u5c1120%\uff08\u5bf9 \uff09
\uff083\uff09\u6ca1\u4eba\u89e3\u4e24\u9053\u9898\uff0c50\u4eba\u5de5\u5171\u4f5c\u951910\u9898\uff0c\u9519\u8bef\u7387\u662f20%\uff08 \u9519 \uff09

因为 乙:甲 =1 ：（1+25%）=4 ：5
. （5-4）/ 5 =20%
所以 乙:甲=(4 ):( 5),乙比甲少( 20)%

5:4 20%