Question

ijÖÐѧ¿ªÕ¹ÁËÒ»´Î¡°³ÏÐÅ×öÈË¡±µÄÖ÷ÌâÑݽ²±ÈÈü£®Èü³Ì¹²·Ö¡°Ô¤Èü¡¢¸´ÈüºÍ¾öÈü¡±Èý¸ö½×¶Î£¬Ô¤ÈüÓɸ÷°à¾ÙÐУ¬È«Ô±²Î¼Ó£¬°´Í³Ò»±ê×¼ÆÀ·Ö£®Í³¼ÆºóÖƳɡ°Ô¤Èü³É¼¨Í³¼Æͼ£¨Î´»­ÍêÕû£©¡±£¬´ÓÔ¤ÈüÖи÷Ä꼶²úÉúÃûÑ¡ÊÖ½øÐи´Èü£¬³É¼¨¼û¡°¸´Èü³É¼¨Í³¼Æ±í¡±£®£¨²ÉÓ÷ÖÖÆ£¬µÃ·Ö¶¼Îª·ÖÒÔÉϵÄÕûÊý£®£©
 
£¨1£©Èç¹û½«¾ÅÄ꼶ԤÈü³É¼¨ÖƳÉÉÈÐÎͳ¼Æͼ£¬Ôò¡°·ÖÒÔÉϵÄÈËÊý¡±¶ÔÓ¦µÄÔ²ÐĽǶÈÊýÊÇ___________£®
£¨2£©Èç¹û°ËÄ꼶¸´Èü³É¼¨ÔÚ·ÖÒÔÉϵÄÈËÊýÊÇÔ¤ÈüʱͬÀà³É¼¨ÈËÊýµÄ£¬Ç벹ȫԤÈü³É¼¨Í³¼Æͼ£®
£¨3£©¸´Èü³É¼¨ÖУ¬ÆßÄ꼶ѡÊֵijɼ¨µÄÖÐλÊýÊÇ___________£»¾ÅÄ꼶ѡÊֵijɼ¨µÄÖÚÊýÊÇ         £®

Answer 1

(1)100¡ã.     ¡­¡­¡­¡­¡­¡­¡­¡¡1·Ö
 
(2) Èçͼ.   ¡­¡­¡­¡­¡­¡­¡­¡­¡¡3·Ö
£¨3£©85.5£¬80£® ¡­¡­¡­¡­¡­¡­¡¡5·Ö

·ÖÎö£º£¨1£©Ô²ÐĽÇ=360¡ã¡Á°Ù·Ö±È£¬°Ù·Ö±È=90·ÖÒÔÉϵÄÈËÊý¡Â¾ÅÄ꼶ѧÉú×ÜÊý¡Á100%£®
£¨2£©°ËÄ꼶¸´Èü³É¼¨ÔÚ90·ÖÒÔÉϵÄÈËÊý¡ÂÔ¤ÈüʱͬÀà³É¼¨ÈËÊý¡Á100%=0.5%£®
£¨3£©¸´Èü³É¼¨´ÓСµ½´óÅÅÁÐλÖô¦ÓÚÖмäµÄÊýÊÇÖÐλÊý£¬ÖмäÁ½¸öÊýʱ£¬È¡Æ½¾ùÖµ£®ÖÚÊýÊdzöÏÖ´ÎÊý×î¶àµÄÊý£¬¸ù¾Ý¶¨Òå¿ÉµÃ´ð°¸£®

½â£º£¨1£©200¡Â£¨40+180+300+200£©¡Á360¡ã=100¡ã£®
£¨2£©ÉèÔ¤ÈüʱͬÀà³É¼¨ÈËÊýΪxÈË£¬
1¡Âx=0.5%£¬
½âµÃ£ºx=200£¬Èçͼ£®
£¨3£©ÆßÄ꼶¸´Èü³É¼¨´ÓСµ½´óÅÅÁУº76£¬80£¬81£¬81£¬85£¬86£¬87£¬89£¬91£¬99λÖô¦ÓÚÖмäµÄÊýÊÇ£º85£¬86£¬
¡àÖÐλÊýÊÇ£º£¨85+86£©¡Â2=85.5£¬
¾ÅÄ꼶ѡÊֵijɼ¨µÄÖÚÊýÊdzöÏÖ´ÎÊý×î¶àµÄÊý£º80£®