Question

8¡¢Ä³Çø´Ó²Î¼ÓÊýѧÖÊÁ¿¼ì²âµÄ8000ÃûѧÉúÖУ¬Ëæ»ú³éÈ¡Á˲¿·ÖѧÉúµÄ³É¼¨×÷ΪÑù±¾£¬ÎªÁ˽Úʡʱ¼ä£¬ÏȽ«Ñù±¾·Ö³É¼×¡¢ÒÒÁ½×飬·Ö±ð½øÐзÖÎö£¬µÃ±íÒ»£»Ëæºó»ã×ܳÉÑù±¾Êý¾Ý£¬µÃµ½²¿·Ö½á¹û£¬Èç±í¶þ£®
±íÒ»£º

	ÈËÊý/ÈË	ƽ¾ù·Ö/·Ö
¼××é	100	94
ÒÒ×é	80	90

±í¶þ

·ÖÊý¶Î	ƵÊý	µÈ¼¶
0¡Üx£¼60	3	C
60¡Üx£¼72	6
72¡Üx£¼84	36	B
84¡Üx£¼96
96¡Üx£¼108	50	A
108¡Üx£¼120	13

Çë¸ù¾Ý±íÒ»¡¢±í¶þËùʾµÄÐÅÏ¢»Ø´ðÏÂÁÐÎÊÌ⣺
£¨1£©Ñù±¾ÖУ¬Ñ§ÉúµÄÊýѧ³É¼¨µÄƽ¾ù·ÖÊýԼΪ

92.2

·Ö£¨½á¹û¾«È·µ½0.1·Ö£©£»
£¨2£©Ñù±¾ÖУ¬Êýѧ³É¼¨ÔÚ£¨84£¬96£©·ÖÊý¶ÎµÄƵÊý

72

£¬µÈ¼¶ÎªAµÄÈËÊýÕ¼³éÑùѧÉú×ÜÊýµÄ°Ù·Ö±ÈΪ

35%

£¬ÖÐλÊýËùÔڵķÖÊý¶ÎΪ

£¨84£¬96£©

£»
£¨3£©¹À¼ÆÕâ8000ÃûѧÉú³É¼¨µÄƽ¾ù·ÖÊýԼΪ

92.2

·Ö£®£¨½á¹û¾«È·µ½0.1·Ö£©

Answer 1

·ÖÎö£º£¨1£©Ñù±¾ÖУ¬Ñ§ÉúµÄÊýѧ³É¼¨µÄƽ¾ù·ÖÊý¿ÉÒÔÓã¨100¡Á94+80¡Á90£©¡Â£¨100+80£©¼ÆËãµÃµ½£»
£¨2£©ÓÃ40%¡Á180¾Í¿ÉÒԵõ½Êýѧ³É¼¨ÔÚ84-96·ÖÊý¶ÎµÄƵÊý£¬µÈ¼¶ÎªAµÄÈËÊýΪ63£¬¶ø×ÜÈËÊýΪ180£¬ËùÒԵȼ¶ÎªAµÄÈËÊýÕ¼³éÑùѧÉú×ÜÊýµÄ°Ù·Ö±È¿ÉÒÔÓÃ63¡Â180¼ÆËãµÃµ½£»
£¨3£©ÓÃÑù±¾È¥¹À¼Æ×ÜÌåµÄ˼Ïë¾Í¿ÉÒԵõ½8000ÃûѧÉú³É¼¨µÄƽ¾ù·ÖÊý£®

½â´ð£º½â£º£¨1£©Ñ§ÉúµÄÊýѧ³É¼¨µÄƽ¾ù·ÖÊýΪ£º£¨100¡Á94+80¡Á90£©¡Â£¨100+80£©=92.2£»
£¨2£©Êýѧ³É¼¨ÔÚ84-96·ÖÊý¶ÎµÄƵÊýΪ180-£¨3+6+36+50+13£©=72£¬
µÈ¼¶ÎªAµÄÈËÊýÕ¼³éÑùѧÉú×ÜÊýµÄ°Ù·Ö±ÈΪ63¡Â180=35%£»
µÚ90¸öÊýºÍµÚ91¸öÊý¶¼ÔÚ£¨84£¬96£©·ÖÊý¶Î£¬ËùÒÔÖÐλÊýËùÔڵķÖÊý¶ÎΪ£¨84£¬96£©£®
£¨3£©8000ÃûѧÉú³É¼¨µÄƽ¾ù·ÖÊýΪ92.2·Ö£®
¹ÊÌî92.2£»72£¬35%£¬£¨84£¬96£©£»92.2£®

µãÆÀ£º´ËÌ⿼²éÁËƽ¾ùÊý¡¢ÖÐλÊý¡¢ÆµÂÊ¡¢ÆµÊýµÄ¶¨Ò壬Ҳ¿¼²éÁËÓÃÑù±¾È¥¹À¼Æ×ÜÌåµÄ˼Ï룮