Question

5£®Ä³Ð£¾ÅÄ꼶һ´ÎÄ£Ä⿼ÊÔºó£¬Êýѧ¿¼ÊÔΪÁËÁ˽âѧÉúµÄѧϰÇé¿ö£¬ÔÚȫУ1000Ãû¾ÅÄ꼶ѧÉúÖУ¬Ëæ»ú³éÈ¡ÁË50ÃûѧÉúµÄÊýѧ³É¼¨½øÐÐͳ¼Æ·ÖÎö£¬²¢»æÖÆÁËÈçÏÂͳ¼Æ±íºÍͳ¼Æͼ£¨²¿·ÖÐÅϢδ¸øÈ«£©£®

³É¼¨/·Ö	111¡«120	101¡«110	91¡«100	90¼°90ÒÔÏÂ
µÈ¼¶	A	B	C	D
ѧÉúÈËÊý	m	20	n	8

¸ù¾ÝÉÏÃæµÄͳ¼Æͼ±í£¬»Ø´ðÏÂÁÐÎÊÌ⣺
£¨1£©²¹È«ÌõÐÎͳ¼Æͼ£¬²¢Çó³öÉÈÐÎͳ¼ÆͼÖУ¬±íʾ³É¼¨ÎªBµÈ¼¶µÄÉÈÐÎËù¶ÔµÄÔ²ÐĽǵĶÈÊý£»
£¨2£©±»µ÷²éѧÉúÔÚÕâ´ÎÄ£Ä⿼ÊÔÖУ¬Êýѧ³É¼¨µÄÖÐλÊýÂäÔÚBµÈ¼¶£®
£¨3£©Çë¹À¼Æ¸ÃУ¾ÅÄ꼶ѧÉúÔÚÕâ´ÎÄ£Ä⿼ÊÔÖУ¬Êýѧ³É¼¨ÔÚBµÈ¼¶ÒÔÉÏ£¨º¬BµÈ¼¶£©µÄѧÉú¿É´ï¶àÉÙÃû£¿

Answer 1

·ÖÎö £¨1£©¸ù¾Ýͳ¼ÆͼÖеÄÊý¾Ý¿ÉÒÔÇóµÃÌõÐÎͳ¼ÆͼÖÐδ֪µÄÊý¾ÝºÍ³É¼¨ÎªBµÈ¼¶µÄÉÈÐÎËù¶ÔµÄÔ²ÐĽǵĶÈÊý£»
£¨2£©¸ù¾ÝÖÐλÊýµÄ¶¨ÒåºÍͳ¼ÆͼÖеÄÊý¾Ý¿ÉÒÔÇóµÃÊýѧ³É¼¨µÄÖÐλÊýÂäÔÚÄĸöµÈ¼¶£»
£¨3£©¸ù¾Ýͳ¼ÆͼÖеÄÊý¾Ý¿ÉÒÔÇóµÃÊýѧ³É¼¨ÔÚBµÈ¼¶ÒÔÉÏ£¨º¬BµÈ¼¶£©µÄѧÉúµÄÈËÊý£®

½â´ð ½â£º£¨1£©ÓÉÌâÒâºÍͳ¼ÆͼÖеÄÊý¾Ý¿ÉµÃ£¬
µÈ¼¶ÎªAµÄѧÉúÓУº50¡Á20%=10£¨ÈË£©£¬
µÈ¼¶ÎªBµÄѧÉúÓУº50¡Á24%=12£¨ÈË£©£¬
²¹È«µÄÌõÐÎͳ¼ÆͼÈçÓÒͼËùʾ£¬
ÉÈÐÎͳ¼ÆͼÖУ¬±íʾ³É¼¨ÎªBµÈ¼¶µÄÉÈÐÎËù¶ÔµÄÔ²ÐĽǵĶÈÊýÊÇ£º360¡ã¡Á$\frac{20}{50}$=144¡ã£»
£¨2£©ÓÉͼ¿ÉµÃ£¬
±»µ÷²éѧÉúÔÚÕâ´ÎÄ£Ä⿼ÊÔÖУ¬Êýѧ³É¼¨µÄÖÐλÊýÂäÔÚBµÈ¼¶£¬
¹Ê´ð°¸Îª£ºB£»
£¨3£©ÓÉÌâÒâ¿ÉµÃ£¬
Êýѧ³É¼¨ÔÚBµÈ¼¶ÒÔÉÏ£¨º¬BµÈ¼¶£©µÄѧÉú¿É´ï£º1000¡Á$\frac{30}{50}$=600£¨Ãû£©£¬
¼´Êýѧ³É¼¨ÔÚBµÈ¼¶ÒÔÉÏ£¨º¬BµÈ¼¶£©µÄѧÉú¿É´ï600Ãû£®

µãÆÀ ±¾Ì⿼²éÌõÐÎͳ¼Æͼ¡¢ÉÈÐÎͳ¼Æͼ¡¢ÓÃÑù±¾¹À¼Æ×ÜÌå¡¢ÖÐλÊý£¬½â´ð´ËÀàÎÊÌâµÄ¹Ø¼üÊÇÃ÷È·ÌâÒ⣬ÕÒ³öËùÇóÎÊÌâÐèÒªµÄÌõ¼þ£®