ÌâÄ¿ÄÚÈÝ
![¾«Ó¢¼Ò½ÌÍø](http://thumb.1010pic.com/pic3/upload/images/201303/19/0e0ef7ff.png)
£¨1£©ÔÚt1¡æʱ£¬½«56g¼×ÎïÖÊ·ÅÈË100gË®ÖУ¬½Á°è£¬³ä·ÖÈܽâºóÐγɵÄÈÜÒºÈÜÖÊÖÊÁ¿·ÖÊýΪ
£¨2£©µãAÃèÊöµÄÊÇt2¡æʱ¼×ÎïÖʵÄ
£¨3£©A¡¢B¡¢C¡¢DËĸöµãËù´ú±íµÄ4ÖÖ¼×ÎïÖʵÄÈÜÒºÖУ¬ÈÜÖÊÖÊÁ¿·ÖÊý´óС¹ØϵÕýÈ·µÄÊÇ
¢ÙA£¾C=D£¾B ¢ÚA=C£¾B=D ¢ÛA£¾B£¾D=C ¢ÜA£¾B=D£¾C£®
·ÖÎö£ºÓÉt1¡æʱ¼×µÄÈܽâ¶È£¬¿ÉÒÔÅжϽ«56g¼×ÎïÖÊ·ÅÈË100gË®ÖÐÄÜ·ñÐγɱ¥ºÍÈÜÒº¼°Îö³öµÄÈÜÒºÖÐÈÜÖʵÄÖÊÁ¿·ÖÊý£»¹ÌÌåÈܽâ¶ÈÇúÏßÉϼ°ÇúÏßÉÏ·½µÄµã¶¼±íʾ¸ÃζÈϵı¥ºÍÈÜÒº£¬Èܽâ¶ÈÇúÏßÏ·½µÄµã±íʾµÄÊǸÃζÈϵIJ»±¥ºÍÈÜÒº£»ÓÉA¡¢B¡¢C¡¢DµãµÄÈܽâ¶È´óС¿ÉÒÔÅжÏÈÜÖʵÄÖÊÁ¿·ÖÊý´óС£®
½â´ð£º½â£º£¨1£©t1¡æʱ£¬¼×µÄÈܽâ¶ÈΪ50g£¬½«56g¼×ÎïÖÊ·ÅÈË100gË®ÖУ¬½Á°è£¬³ä·ÖÈܽâºóÖ»ÄÜÈܽâ50g£¬¹ÊÐγɵÄÈÜÒºÈÜÖÊÖÊÁ¿·ÖÊýΪ
¡Á100%=33.3%£»
£¨2£©µãAλÓÚ¼×µÄÈܽâ¶ÈÇúÏßÉÏ£¬¹ÊÊÇt2¡æʱ¼×ÎïÖʵı¥ºÍÈÜÒº£»ÓÉÓÚ¼×µÄÈܽâ¶ÈËæ×ÅζȵÄÉý¸ß¶øÔö´ó£¬¹Ê½«170g¸ÃÈÜÒº½µÎÂÖÁt1¡æ£¬Óо§ÌåÎö³ö£¬ÈÜÒºÈÔΪ±¥ºÍÈÜÒº£¬¹ÊµãAÑØÇúÏßÏòÏÂÒƶ¯µ½µãB£»t2¡æʱ£¬170g¸Ã±¥ºÍÈÜÒºÖк¬ÈÜÖÊ70g£¬t1¡æʱ£¬¼×µÄÈܽâ¶ÈΪ50g£¬¹Ê½µÎÂÖÁt1¡æʱÎö³ö¾§Ìå20g£»
£¨3£©AµãÊÇt2¡æʱ¼×µÄ±¥ºÍÈÜÒº£¬BµãÊÇt1¡æʱ¼×µÄ±¥ºÍÈÜÒº£¬ÓÉÓÚ¼×µÄÈܽâ¶ÈËæ×ÅζȵÄÉý¸ß¶øÔö´ó£¬¹ÊAµãµÄÈܽâ¶È´óÓÚBµãµÄÈܽâ¶È£¬AµÄÈÜÖʵÄÖÊÁ¿·ÖÊý´óÓÚBµÄÈÜÖʵÄÖÊÁ¿·ÖÊý£»C¡¢D·Ö±ðΪt2¡æʱ¡¢t1¡æʱ¼×µÄ²»±¥ºÍÈÜÒº£¬ÓÉÓÚÈÜÖʵÄÖÊÁ¿ÏàµÈ£¬¹ÊÈÜÒºÖÐÈÜÖʵÄÖÊÁ¿·ÖÊýÏàµÈ£»¹ÊÈÜÖÊÖÊÁ¿·ÖÊý´óС¹ØϵΪA£¾B£¾D=C£®
¹Ê´ð°¸Îª£º£¨1£©33.3%£» £¨2£©±¥ºÍ£»ÑØÇúÏßÏòÏÂÒƶ¯µ½µãB£» 20£»£¨3£©¢Û£®
50g |
50g+100g |
£¨2£©µãAλÓÚ¼×µÄÈܽâ¶ÈÇúÏßÉÏ£¬¹ÊÊÇt2¡æʱ¼×ÎïÖʵı¥ºÍÈÜÒº£»ÓÉÓÚ¼×µÄÈܽâ¶ÈËæ×ÅζȵÄÉý¸ß¶øÔö´ó£¬¹Ê½«170g¸ÃÈÜÒº½µÎÂÖÁt1¡æ£¬Óо§ÌåÎö³ö£¬ÈÜÒºÈÔΪ±¥ºÍÈÜÒº£¬¹ÊµãAÑØÇúÏßÏòÏÂÒƶ¯µ½µãB£»t2¡æʱ£¬170g¸Ã±¥ºÍÈÜÒºÖк¬ÈÜÖÊ70g£¬t1¡æʱ£¬¼×µÄÈܽâ¶ÈΪ50g£¬¹Ê½µÎÂÖÁt1¡æʱÎö³ö¾§Ìå20g£»
£¨3£©AµãÊÇt2¡æʱ¼×µÄ±¥ºÍÈÜÒº£¬BµãÊÇt1¡æʱ¼×µÄ±¥ºÍÈÜÒº£¬ÓÉÓÚ¼×µÄÈܽâ¶ÈËæ×ÅζȵÄÉý¸ß¶øÔö´ó£¬¹ÊAµãµÄÈܽâ¶È´óÓÚBµãµÄÈܽâ¶È£¬AµÄÈÜÖʵÄÖÊÁ¿·ÖÊý´óÓÚBµÄÈÜÖʵÄÖÊÁ¿·ÖÊý£»C¡¢D·Ö±ðΪt2¡æʱ¡¢t1¡æʱ¼×µÄ²»±¥ºÍÈÜÒº£¬ÓÉÓÚÈÜÖʵÄÖÊÁ¿ÏàµÈ£¬¹ÊÈÜÒºÖÐÈÜÖʵÄÖÊÁ¿·ÖÊýÏàµÈ£»¹ÊÈÜÖÊÖÊÁ¿·ÖÊý´óС¹ØϵΪA£¾B£¾D=C£®
¹Ê´ð°¸Îª£º£¨1£©33.3%£» £¨2£©±¥ºÍ£»ÑØÇúÏßÏòÏÂÒƶ¯µ½µãB£» 20£»£¨3£©¢Û£®
µãÆÀ£º±¾ÌâÄѶȲ»´ó£¬Ö÷Òª¿¼²éÁ˹ÌÌåÈܽâ¶ÈÇúÏßËù±íʾµÄÒâÒ壬ͨ¹ý±¾Ìâ¿ÉÒÔ¼ÓǿѧÉú¶Ô¹ÌÌåÈܽâ¶ÈµÄÀí½â£¬ÅàÑøѧÉúÓ¦ÓÃ֪ʶ½â¾öÎÊÌâµÄÄÜÁ¦£®
![](http://thumb2018.1010pic.com/images/loading.gif)
Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿