Question

×Ô2006Äê3ÔÂ26ÈÕÆ𣬹ú¼Ò¶ÔʯÓÍ¿ª²ÉÆóÒµÏúÊÛ¹ú²úʯÓÍÒò¼Û¸ñ³¬¹ýÒ»¶¨Ë®Æ½£¨Ã¿Í°40ÃÀÔª£©Ëù»ñµÄ³¬¶îÊÕÈ룬½«°´±ÈÀýÕ÷ÊÕÊÕÒæ½ð£¨×¢£º¢ÙÕ÷ÊÕ±ÈÂʼ°Ëã·¨¾ÙÀýÈçϱíµÄͼºÍ±í£¬¢Ú°´1ÃÀÔª¶Ò»»8ÔªÈËÃñ±ÒµÄ»ãÂʼÆË㣩

ʯÓÍÌرðÊÕÒæ½ð¼ÆËã¾ÙÀý

ʯÓͼ۸ñ£¨ÃÀÔª/Í°£©	ʯÓÍÌرðÊÕÒæ½ð£¨ÃÀÔª/Í°£©
40	0
45	5¡Á20%
48	5¡Á20%+3¡Á25%=1.75
55	3.75
¡­	¡­

ʯÓÍÌرðÊÕÒæ½ð¼ÆËã¾ÙÀý
¸ù¾ÝÉÏÃæÌṩµÄÐÅÏ¢£¬½â¾öÏÂÁÐÎÊÌ⣺
£¨1£©Èç¹ûÊÛ¼ÛΪÿͰ43ÃÀÔª£¬ÄÇôÖйúʯÓ͹«Ë¾Ã¿Í°µÄÌرðÊÕÒæ½ðÊǶàÉÙÔªÈËÃñ±Ò£¿
£¨2£©Èç¹ûÊÛ¼ÛΪÿͰ48ÃÀÔª£¬ÄÇôÖйúʯÓ͹«Ë¾Ã¿Í°µÄÌرðÊÕÒæ½ðÊǶàÉÙÔªÈËÃñ±Ò£¿
£¨3£©Èç¹ûÊÛ¼ÛΪÿͰ53ÃÀÔª£¬ÄÇôÖйúʯÓ͹«Ë¾Ã¿Í°µÄÌرðÊÕÒæ½ðÊǶàÉÙÔªÈËÃñ±Ò£¿
£¨4£©ÓÐÈËÔ¤²âÖйúʯÓ͹«Ë¾2006ÄêµÚ3¼¾¶È½«ÏúÊÛ200ÍòͰʯÓÍ£¬ÊÛ¼ÛΪÿͰ53ÃÀÔª£¬ÄÇôÖйúʯÓ͹«Ë¾¸Ã¼¾¶È¹ÀËãµÄÌرðÊÕÒæ½ð½«´ïµ½¶àÉÙÔªÈËÃñ±Ò£¿£¨ÓÿÆѧ¼ÇÊý·¨£©
£¨5£©Ð´³öÖйúʯÓÍÿͰµÄÌرðÊÕÒæ½ðy£¨ÃÀÔª£©ÓëÊÛ¼ÛÿͰx£¨ÃÀÔª£©£¨µ±50£¼x¡Ü55£©µÄ¹Øϵʽ£®

Answer 1

½â£º£¨1£©£¨43-40£©¡Á20%¡Á8=4.8Ôª£»

£¨2£©[5¡Á20%+£¨48-45£©¡Á25%]¡Á8=14Ôª£»

£¨3£©£¨5¡Á20%+5¡Á25%+3¡Á30%£©¡Á8=25.2Ôª£»

£¨4£©2000000¡Á25.2=5.04¡Á10⁷£»

£¨5£©ÓÉÌâÒâµÃy=5¡Á20%+5¡Á25%+£¨x-50£©¡Á30%£¬¼´y=0.3x-12.75£¨50£¼x¡Ü55£©£®
·ÖÎö£ºÓÉÉÏͼ¿ÉÖª43ÃÀÔª¡¢48ÃÀÔª¡¢53ÃÀÔªÕ÷ÊÕÊÕÒæ½ð·Ö±ðÊÇ20%¡¢25%¡¢30%£¬·Ö±ð¼ÆËã¼´¿É£®
£¨4£©ÓÉ£¨3£©ÖªÃ¿Í°53ÃÀԪʱ£¬ÌرðÊÕÒæ½ðÊÇ25.2ÔªÈËÃñ±Ò£¬Ôò200ÍòÍ°¿É¼ÆË㣮
£¨5£©ÓÉÉÏͼÈÝÒ×д³öÖйúʯÓÍÿͰµÄÌرðÊÕÒæ½ðy£¨ÃÀÔª£©ÓëÊÛ¼ÛÿͰx£¨ÃÀÔª£©£¨µ±50£¼x¡Ü55£©µÄ¹Øϵʽ£¬¼´y=5¡Á20%+5¡Á25%+£¨x-50£©¡Á30%£®
µãÆÀ£º±¾Ì⿼²éʶͼÄÜÁ¦£¬²¢ÀûÓùØϵʽÇóÖµµÄÔËËã¼¼ÄܺʹÓÇé¾°ÖÐÌáÈ¡ÐÅÏ¢¡¢½âÊÍÐÅÏ¢¡¢½â¾öÎÊÌâµÄÄÜÁ¦£®