Question

1£®Ö»ÁÐʽ²»¼ÆË㣺
¢Ù¼×ÒÒÁ½µØÏà¾à180ǧÃ×£¬Ò»Á¾Æû³µ¼×µØÏòÒҵسö·¢£¬ÒÑÐÐÈ«³ÌµÄ$\frac{5}{9}$£¬»¹Ê£Ï·³ÌµÄ¼¸·ÖÖ®¼¸Ã»×ߣ¿ÁÐʽ£º1-$\frac{5}{9}$
¢ÚÍõʦ¸µÒª×ö12½ÚÖ±¾¶Îª0.16Ã×£¬Ã¿½Ú³¤1.2Ã×µÄͨ·ç¹Ü£¨½ÓÍ·´¦ºöÂÔ²»¼Æ£©£¬ÐèÒª¶àÉÙƽ·½Ã×µÄÌúƤ£¿ÁÐʽ£º0.16¡Á3.14¡Á1.2¡Á12
¢ÛijУʦÉúÔÚÖú²ÐÈÕÆÚ¼äΪ²Ð¼²È˾è¿î8400Ôª£¬ÀÏʦÓëѧÉú¾è¿îÇ®ÊýµÄ±ÈÊÇ3£º2£¬ÀÏʦ±ÈѧÉú¶à¾è¿î¶àÉÙÔª£¿ÁÐʽ£º8400¡Á£¨$\frac{3}{3+2}$-$\frac{2}{3+2}$£©
¢Ü¸ßÀÏʦ½«20000ԪǮ´æÈëÒøÐУ¬¶¨ÆÚÈýÄ꣬ÄêÀûÂÊ4.25%£¬µ½ÆÚºóÈô°´5%½»ÄÉÀûϢ˰£¬Ëý»ñµÃË°ºóÀûÏ¢¶àÉÙÔª£¿ÁÐʽ£º20000¡Á4.25%¡Á3¡Á£¨1-5%£©£®

Answer 1

·ÖÎö ¢Ù½«È«³Ìµ±×÷µ¥Î»¡°1¡±£¬ÒÑÐÐÈ«³ÌµÄ$\frac{5}{9}$£¬¸ù¾Ý·ÖÊý¼õ·¨µÄÒâÒ壬»¹Ê£ÏÂÈ«³ÌµÄ1-$\frac{5}{9}$û×ߣ®$\frac{5}{8}$
¢Ú¸ù¾ÝÔ²µÄÖܳ¤¹«Ê½¿ÉÖª£¬´Ëͨ·ç¹ÜµÄÖܳ¤ÊÇ0.16¡Á3.14Ã×£¬ËùÒÔÿ½Úͨ·ç¹ÜµÄ±íÃæ»ýÊÇ0.16¡Á3.14¡Á1.2ƽ·½Ã×£¬È»ºóÓÃÿ½ÚµÄ±íÃæ»ý³Ë½ÚÊý£¬¼´µÃÐèÒª¶àÉÙƽ·½Ã×µÄÌúƤ£®
¢ÛÓÉÓÚÀÏʦÓëѧÉú¾è¿îÇ®ÊýµÄ±ÈÊÇ3£º2£¬ËùÒÔÀÏʦ¾èÁË×ÜÇ®ÊýµÄ$\frac{3}{3+2}$£¬Ñ§Éú¾èÁË×ÜÇ®ÊýµÄ$\frac{2}{3+2}$£¬¸ù¾Ý·ÖÊý¼õ·¨µÄÒâÒ壬ÀÏʦ±ÈѧÉú¶à¾èÁË×ÜÇ®ÊýµÄ$\frac{3}{3+2}$-$\frac{2}{3+2}$£¬¸ù¾Ý·ÖÊý³Ë·¨µÄÒâÒ壬ÀÏʦ±ÈѧÉú¶à¾èÁË8400¡Á£¨$\frac{3}{3+2}$-$\frac{2}{3+2}$£©Ôª£®
¢Ü¸ßÀÏʦ½«20000ԪǮ´æÈëÒøÐУ¬¶¨ÆÚÈýÄ꣬ÄêÀûÂÊ4.25%£¬¸ù¾Ý·ÖÊý³Ë·¨µÄÒâÒ壬ÿÄêµÄÀûÏ¢ÊÇ20000¡Á4.25%Ôª£¬¸ù¾Ý³Ë·¨µÄÒâÒ壬ÈýÄêÀûϢΪ20000¡Á4.25%¡Á3Ôª£¬ÓÖµ½ÆÚºó°´5%½»ÄÉÀûϢ˰£¬¼´Ëù½»ÀûϢ˰ռËùµÃÀûÏ¢µÄ5%£¬¸ù¾Ý·ÖÊý¼õ·¨µÄÒâÒ壬˰ºóÀûÏ¢Õ¼ËùµÃÀûÏ¢µÄ1-5%£¬¸ù¾Ý·ÖÊý³Ë·¨µÄÒâÒ壬»ñµÃË°ºóÀûÏ¢ÊÇ20000¡Á4.25%¡Á3¡Á£¨1-5%£©Ôª£®

½â´ð ½â£º¢Ù1-$\frac{5}{9}$=$\frac{4}{9}$
´ð£º»¹Ê£Ï·³ÌµÄ$\frac{4}{9}$û×ߣ®

¢Ú0.16¡Á3.14¡Á1.2¡Á12
=0.5024¡Á1.2¡Á12
=0.60288¡Á12
=7.23456£¨Æ½·½Ã×£©
´ð£ºÐèÒª7.23456ƽ·½Ã×µÄÌúƤ£®

¢Û8400¡Á£¨$\frac{3}{3+2}$-$\frac{2}{3+2}$£©
=8400¡Á$\frac{1}{5}$
=1680£¨Ôª£©
´ð£ºÀÏʦ±ÈѧÉú¶à¾è¿î1680Ôª£®

¢Ü20000¡Á4.25%¡Á3¡Á£¨1-5%£©
=2550¡Á95%
=2422.5£¨Ôª£©
´ð£ºËý»ñµÃË°ºóÀûÏ¢2422.5Ôª£®
¹Ê´ð°¸Îª£º1-$\frac{5}{8}$£¬0.16¡Á3.14¡Á1.2¡Á12£¬8400¡Á£¨$\frac{3}{3+2}$-$\frac{2}{3+2}$£©£¬20000¡Á4.25%¡Á3¡Á£¨1-5%£©£®

µãÆÀ Íê³É±¾ÌâҪעÒâ·ÖÎöÿСÌâÖÐËù¸øÊýÁ¿Ö®¼äµÄ¹Øϵ£¬È»ºóÁгöÕýÈ·Ëãʽ½â´ð£®