ÌâÄ¿ÄÚÈÝ
¹Ë¿ÍÀîijÓÚ½ñÄê¡°Î塤һ¡±Æڼ䵽µçÆ÷É̳¡¹ºÂò¿Õµ÷£¬ÓëÓªÒµÔ±ÓÐÈçϵÄÒ»¶Î¶Ô»°£º
¹Ë¿ÍÀîij£ºAÆ·ÅƵĿյ÷È¥Äê¡°¹úÇ족ÆÚ¼ä¼Û¸ñΪ3000Ôª£¬Õâ´Î±ãÒ˶àÁË£¬Ò»´Î¾Í½µÎª2430Ôª£¬ÊDz»ÊÇÖÊÁ¿ÓÐÎÊÌ⣿
ÓªÒµÔ±£º²»ÊÇÒ»´Î½µ¼Û£¬ÕâÊǵڶþ´Î½µ¼Û£¬½ñÄê´º½ÚÆÚ¼äÒѾ½µÁËÒ»´Î¼Û£¬Á½´Î½µ¼ÛµÄ·ù¶ÈÏàͬ£®ÎÒÃÇËùÏúÊ۵Ŀյ÷ÖÊÁ¿¶¼ÊǺܺõģ¬ÓÈÆäÊÇAÆ·ÅÆϵÁпյ÷µÄÖÊÁ¿ÊÇÒ»Á÷µÄ£®
¹Ë¿ÍÀîij£ºÎÒÃǵ¥Î»µÄͬÊÂÒ²ÏëÂòһ̨AÆ·ÅƵĿյ÷£¬ÓÐÓÅ»ÝÕþ²ßÂð£¿
ÓªÒµÔ±£ºÓУ¬Çë¿´¡¶¹ºÂòAÆ·ÅÆϵÁпյ÷µÄÓŻݰ취¡·£®¹ºÂòAÆ·ÅÆϵÁпյ÷µÄÓŻݰ취£º
·½°¸Ò»£º¸÷ÖÖÐͺŵĿյ÷ÿ̨¼Û¸ñÓÅ»Ý5%£¬ËÍ»õÉÏÃÅ£¬¸ºÔð°²×°£¬Ã¿Ì¨¿Õµ÷Áí¼ÓÔËÊä·ÑºÍ°²×°·Ñ¹²90Ôª£®
·½°¸¶þ£º¸÷ÖÖÐͺŵĿյ÷ÿ̨¼Û¸ñÓÅ»Ý2%£¬ËÍ»õÉÏÃÅ£¬¸ºÔð°²×°£¬ÃâÔËÊä·ÑºÍ°²×°·Ñ£®¸ù¾ÝÒÔÉ϶Ի°ºÍAÆ·ÅÆϵÁпյ÷ÏúÊÛµÄÓŻݰ취£¬ÇëÄã»Ø´ðÏÂÁÐÎÊÌ⣺
£¨1£©ÇóAÆ·ÅÆϵÁпյ÷ƽ¾ùÿ´Î½µ¼ÛµÄ°Ù·ÖÂÊ£¿
£¨2£©ÇëÄãΪ¹Ë¿ÍÀîij¾ö²ß£¬Ñ¡ÔñÄÄÖÖÓŻݸüºÏË㣬²¢Í¨¹ý¼ÆËã˵Ã÷¡£
¹Ë¿ÍÀîij£ºAÆ·ÅƵĿյ÷È¥Äê¡°¹úÇ족ÆÚ¼ä¼Û¸ñΪ3000Ôª£¬Õâ´Î±ãÒ˶àÁË£¬Ò»´Î¾Í½µÎª2430Ôª£¬ÊDz»ÊÇÖÊÁ¿ÓÐÎÊÌ⣿
ÓªÒµÔ±£º²»ÊÇÒ»´Î½µ¼Û£¬ÕâÊǵڶþ´Î½µ¼Û£¬½ñÄê´º½ÚÆÚ¼äÒѾ½µÁËÒ»´Î¼Û£¬Á½´Î½µ¼ÛµÄ·ù¶ÈÏàͬ£®ÎÒÃÇËùÏúÊ۵Ŀյ÷ÖÊÁ¿¶¼ÊǺܺõģ¬ÓÈÆäÊÇAÆ·ÅÆϵÁпյ÷µÄÖÊÁ¿ÊÇÒ»Á÷µÄ£®
¹Ë¿ÍÀîij£ºÎÒÃǵ¥Î»µÄͬÊÂÒ²ÏëÂòһ̨AÆ·ÅƵĿյ÷£¬ÓÐÓÅ»ÝÕþ²ßÂð£¿
ÓªÒµÔ±£ºÓУ¬Çë¿´¡¶¹ºÂòAÆ·ÅÆϵÁпյ÷µÄÓŻݰ취¡·£®¹ºÂòAÆ·ÅÆϵÁпյ÷µÄÓŻݰ취£º
·½°¸Ò»£º¸÷ÖÖÐͺŵĿյ÷ÿ̨¼Û¸ñÓÅ»Ý5%£¬ËÍ»õÉÏÃÅ£¬¸ºÔð°²×°£¬Ã¿Ì¨¿Õµ÷Áí¼ÓÔËÊä·ÑºÍ°²×°·Ñ¹²90Ôª£®
·½°¸¶þ£º¸÷ÖÖÐͺŵĿյ÷ÿ̨¼Û¸ñÓÅ»Ý2%£¬ËÍ»õÉÏÃÅ£¬¸ºÔð°²×°£¬ÃâÔËÊä·ÑºÍ°²×°·Ñ£®¸ù¾ÝÒÔÉ϶Ի°ºÍAÆ·ÅÆϵÁпյ÷ÏúÊÛµÄÓŻݰ취£¬ÇëÄã»Ø´ðÏÂÁÐÎÊÌ⣺
£¨1£©ÇóAÆ·ÅÆϵÁпյ÷ƽ¾ùÿ´Î½µ¼ÛµÄ°Ù·ÖÂÊ£¿
£¨2£©ÇëÄãΪ¹Ë¿ÍÀîij¾ö²ß£¬Ñ¡ÔñÄÄÖÖÓŻݸüºÏË㣬²¢Í¨¹ý¼ÆËã˵Ã÷¡£
½â£º£¨1£©ÉèAÆ·ÅÆϵÁпյ÷ƽ¾ùÿ´Î½µ¼ÛµÄ°Ù·ÖÂÊΪx£¬Ô¼ÛΪa£¬
¸ù¾ÝÌâÒ⣬µÃa£¨1-x£©2=a£¨1-19%£©£¬
½âµÃx1=1.9£¨²»ºÏÌâÒ⣬ÉáÈ¥£©£¬x2=0.1=10%£®
£¨2£©Èô¹Ë¿ÍÀîijÏÖÔÚÒªÂòµÄAÆ·ÅÆϵÁпյ÷µÄijһÐͺŵļ۸ñΪÿ̨xÔª£¬
°´ÕÕÓŻݷ½°¸Ò»Ã¿Ì¨ÐèÖ§¸¶y1Ôª£¬°´ÕÕÓŻݷ½°¸¶þÿ̨ÐèÖ§¸¶y2Ôª£¬
Ôòy1=0.95x+90£¬y2=0.98x£¬
µ±y1£¾y2ʱ£¬x£¼3000£¨Ôª£©£¬´ËʱӦѡ·½°¸¶þ£»
µ±y1=y2ʱ£¬x=3000£¨Ôª£©£¬´ËʱѡÁ½ÖÖ·½°¸¶¼Ò»Ñù£»
µ±y1£¼y2ʱ£¬x£¾3000£¨Ôª£©£¬´ËʱӦѡ·½°¸Ò»£®
´ð£º£¨1£©AÆ·ÅÆϵÁпյ÷ƽ¾ùÿ´Î½µ¼ÛµÄ°Ù·ÖÂÊΪ10%£»
£¨2£©µ±AÆ·ÅÆϵÁпյ÷µÄijһÐͺŵļ۸ñΪÿ̨£¼3000Ԫʱ£¬Ó¦Ñ¡·½°¸¶þ£»
µ±AÆ·ÅÆϵÁпյ÷µÄijһÐͺŵļ۸ñΪÿ̨3000Ԫʱ£¬Á½ÖÖ·½°¸¶¼¿ÉÒÔÑ¡£»
µ±AÆ·ÅÆϵÁпյ÷µÄijһÐͺŵļ۸ñΪÿ̨£¾3000Ԫʱ£¬Ó¦Ñ¡·½°¸Ò»£®
¸ù¾ÝÌâÒ⣬µÃa£¨1-x£©2=a£¨1-19%£©£¬
½âµÃx1=1.9£¨²»ºÏÌâÒ⣬ÉáÈ¥£©£¬x2=0.1=10%£®
£¨2£©Èô¹Ë¿ÍÀîijÏÖÔÚÒªÂòµÄAÆ·ÅÆϵÁпյ÷µÄijһÐͺŵļ۸ñΪÿ̨xÔª£¬
°´ÕÕÓŻݷ½°¸Ò»Ã¿Ì¨ÐèÖ§¸¶y1Ôª£¬°´ÕÕÓŻݷ½°¸¶þÿ̨ÐèÖ§¸¶y2Ôª£¬
Ôòy1=0.95x+90£¬y2=0.98x£¬
µ±y1£¾y2ʱ£¬x£¼3000£¨Ôª£©£¬´ËʱӦѡ·½°¸¶þ£»
µ±y1=y2ʱ£¬x=3000£¨Ôª£©£¬´ËʱѡÁ½ÖÖ·½°¸¶¼Ò»Ñù£»
µ±y1£¼y2ʱ£¬x£¾3000£¨Ôª£©£¬´ËʱӦѡ·½°¸Ò»£®
´ð£º£¨1£©AÆ·ÅÆϵÁпյ÷ƽ¾ùÿ´Î½µ¼ÛµÄ°Ù·ÖÂÊΪ10%£»
£¨2£©µ±AÆ·ÅÆϵÁпյ÷µÄijһÐͺŵļ۸ñΪÿ̨£¼3000Ԫʱ£¬Ó¦Ñ¡·½°¸¶þ£»
µ±AÆ·ÅÆϵÁпյ÷µÄijһÐͺŵļ۸ñΪÿ̨3000Ԫʱ£¬Á½ÖÖ·½°¸¶¼¿ÉÒÔÑ¡£»
µ±AÆ·ÅÆϵÁпյ÷µÄijһÐͺŵļ۸ñΪÿ̨£¾3000Ԫʱ£¬Ó¦Ñ¡·½°¸Ò»£®
£¨1£©ÉèAÆ·ÅÆϵÁпյ÷ƽ¾ùÿ´Î½µ¼ÛµÄ°Ù·ÖÂÊΪx£¬Ô¼ÛΪa£¬¸ù¾ÝÔö³¤ÂʵÄÒ»°ã¹«Ê½¼´¿ÉÁгö·½³Ì½â¾öÎÊÌ⣻
£¨2£©Èô¹Ë¿ÍÀîijÏÖÔÚÒªÂòµÄAÆ·ÅÆϵÁпյ÷µÄijһÐͺŵļ۸ñΪÿ̨xÔª£¬È»ºó·Ö±ðÓÃx±íʾÁ½ÖÖ·½·¨µÄº¯Êý¹Øϵʽ£¬½Ó×Å·ÖÇé¿öÌÖÂÛ£¬²»Í¬Çé¿öµÄ·½·¨ÊÕ·Ñ£¬±È½Ï´óС¼´¿ÉµÃµ½½áÂÛ£®
£¨2£©Èô¹Ë¿ÍÀîijÏÖÔÚÒªÂòµÄAÆ·ÅÆϵÁпյ÷µÄijһÐͺŵļ۸ñΪÿ̨xÔª£¬È»ºó·Ö±ðÓÃx±íʾÁ½ÖÖ·½·¨µÄº¯Êý¹Øϵʽ£¬½Ó×Å·ÖÇé¿öÌÖÂÛ£¬²»Í¬Çé¿öµÄ·½·¨ÊÕ·Ñ£¬±È½Ï´óС¼´¿ÉµÃµ½½áÂÛ£®
Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿