ÌâÄ¿ÄÚÈÝ
½â´ðÏÂÃæ¸÷Ì⣮
¢ÙСºìÓб¾¿Æ¼¼Êé¹²120Ò³£¬µÚÒ»Ìì¿´ÁËÈ«ÊéµÄ
£¬µÚ¶þÌì¿´ÁËÈ«ÊéµÄ20%£¬»¹Ê£¶àÉÙҳû¿´£¿
¢ÚÌÒÊ÷±ÈÀæÊ÷¶à40¿Ã£¬ÌÒÊ÷µÄ¿ÃÊýÊÇÀæÊ÷µÄ120%£®Á½ÖÖÊ÷¸÷ÓжàÉٿã¿£¨Áз½³Ì½â´ð£©
¢ÛѧУͼÊéÊÒ¹º½ø300±¾¹ÊÊÂÊ飬±È¿Æ¼¼ÊéµÄ
¶à50±¾£®¹º½ø¿Æ¼¼Êé¶àÉÙ£¿
¢ÜСÃ÷°Ñ1020ºÁÉý¹ûÖµ¹Èë9¸öС±ºÍ2¸ö´ó±£¬ÕýºÃµ¹Âú£®Ð¡±µÄÈÝÁ¿ÊÇ´ó±µÄ
£®Ð¡±ºÍ´ó±µÄÈÝÁ¿¸÷ÊǶàÉÙºÁÉý£¿
¢ÝÒ»Ìõ¹«Â·ÒѾÐÞÁËËüµÄ
£¬ÔÙÐÞ300Ã×£¬¾ÍÄÜÐÞºÃÕâÌõ·µÄÒ»°ë£®ÕâÌõ¹«Â·³¤¶àÉÙÃ×£¿
¢ßѧУҪÂòһЩƹÅÒÇò£¬Ã¿¸ö3Ôª£¬¼×É̳Ǵò¾ÅÕÛ£¬ÒÒÉÌÏá°Âò°ËËͶþ¡±£¬±ûÉ̳¡Âú100Ôª»¹30ÔªÏÖ½ð£¬Ñ§Ð£ÏëÂò200¸ö£¬ËãÒ»Ë㣺µ½ÄļҹºÂò½ÏºÏË㣿
½â£º¢Ù120¡Á£¨1-
-20%£©£¬
=120¡Á60%£¬
=72£¨Ò³£©£»
´ð£º»¹Ê£72ҳû¿´£®
¢Ú½â£ºÉèÀæÊ÷ÓÐx¿Ã£»ÄÇôÌÒÊ÷¾ÍÓÐ120%x¿Ã£¬Ôò£º
120%x-x=40£¬
0.2x=40£¬
x=200£»
120%x=120%¡Á200=240£¨¿Ã£©£»
´ð£ºÀæÊ÷ÓÐ200¿Ã£¬ÌÒÊ÷ÓÐ240¿Ã£®
¢Û£¨300-50£©
£¬
=250¡Â
£¬
=625£¨±¾£©£»
´ð£º¹º½ø¿Æ¼¼Êé625±¾£®
¢Ü½â£ºÓÉС±µÄÈÝÁ¿ÊÇ´ó±µÄ
µÃ³öÒ»¸ö´ó±µÄÈÝÁ¿ÊÇС±µÄ4±¶£¬
ÄÇôÁ½¸ö´ó±Ï൱ÓÚ8¸öС±£»
ÿ¸öС±µÄÈÝÁ¿£º
1020¡Â£¨9+2¡Â
£©£¬
=1020¡Â£¨9+8£©£¬
=1020¡Â17£¬
=60£¨ºÁÉý£©£»
ÿ¸ö´ó±µÄÈÝÁ¿£º
60¡Â
=240£¨ºÁÉý£©£®
´ð£ºÐ¡±µÄÈÝÁ¿ÊÇ60ºÁÉý£¬´ó±µÄÈÝÁ¿ÊÇ240ºÁÉý£®
¢Ý300¡Â£¨
-
£©£¬
=300¡Â
£¬
=3000£¨Ã×£©£»
´ð£ºÕâÌõ¹«Â·³¤3000Ã×£®
¢ß¼×£º200¡Á3¡Á90%
=600¡Á90%
=540£¨Ôª£©£»
ÒÒ£º200¡Á
¡Á3
=200¡Á
¡Á3
=160¡Á3
=480£¨Ôª£©£»
±û£º200¡Á3-200¡Á3¡Á30%
=600-180
=420£¨Ôª£©
540£¾480£¾420£»
´ð£ºµ½±ûÉ̳ÇÂò±ãÒË£®
·ÖÎö£º¢Ù°ÑÈ«ÊéµÄ×ÜÒ³Êý¿´³Éµ¥Î»¡°1¡±£¬Ê£ÏµÄÒ³ÊýռȫÊéµÄ£¨1-
-20%£©£¬ÓÃ×ÜÒ³Êý³ËÉÏÕâ¸ö·ÖÂʾÍÊÇʣϵÄÒ³Êý£»
¢ÚÉèÀæÊ÷ÓÐx¿Ã£»ÄÇôÌÒÊ÷¾ÍÓÐ120%x¿Ã£»ÓÃÌÒÊ÷µÄ¿ÃÊý¼õÈ¥ÀæÊ÷µÄ¿ÃÊý¾ÍÊÇ40¿Ã£¬ÓÉ´ËÁгö·½³ÌÇó½â£»
¢ÛÓùÊÊÂÊéµÄ±¾Êý¼õÈ¥50±¾¾ÍÊǿƼ¼Êé±¾ÊýµÄ
£¬°Ñ¿Æ¼¼ÊéµÄ±¾Êý¿´³Éµ¥Î»¡°1¡±£¬Óóý·¨Çó³öËüµÄ±¾Êý£»
¢Ü±¾ÌâµÄ¹Ø¼üÔÚÓÚС±µÄÈÝÁ¿ÊÇ´ó±µÄ
£¬ËµÃ÷Ò»¸ö´ó±Ï൱ÓÚ4¸öС±£¬¾Ý´Ë½â´ð¼´¿É£®
¢Ý°ÑÕâÌõ¹«Â·µÄ×ܳ¤¶È¿´³Éµ¥Î»¡°1¡±£¬ÐÞµ½Öеã¾ÍÊÇÐÞÁËÕâÌõ·µÄ
£¬ÄÇôËüµÄ£¨
-
£©¶ÔÓ¦µÄÊýÁ¿¾ÍÊÇ300Ã×£¬ÓÉ´ËÓóý·¨Çó³öÈ«³¤£»
¢Þ¼×£º´ò¾ÅÕÛ£¬ÊÇÖ¸ÏÖ¼ÛÊÇÔ¼ÛµÄ90%£¬¸ù¾ÝÔ¼ÛÇó³ö200¸öƹÅÒÇòµÄÔ¼Û£¬ÔÙÇó³ö200¸öƹÅÒÇòµÄÏÖ¼Û£»
ÒÒ£º¡°Âò°ËËͶþ¡±£¬Ö»ÒªÂò200¸öµÄ
¼´¿É£¬ÔÙÇóÕâô¶à¸öÒª»¨¶àÉÙÇ®£»
±û£º100Ôª»¹30ÔªÏֽ𣬷µµÄÏÖ½ðÊÇÓ¦¸¶¼Û¸ñµÄ30%£¬ÓÃ×ܼۼõÈ¥·µµÄÏֽ𼴿ÉÇó³öÒª»¨µÄÇ®£®
µãÆÀ£º½â¾öʵ¼ÊÎÊÌ⣬ÏÈת»¯ÊýѧÎÊÌ⣬ÕÒ³öµ¥Î»¡°1¡±£¬ÔÙ¸ù¾ÝÊýÁ¿¹ØϵÁÐʽÇó½â£®
![](http://thumb.1010pic.com/pic5/latex/36.png)
=120¡Á60%£¬
=72£¨Ò³£©£»
´ð£º»¹Ê£72ҳû¿´£®
¢Ú½â£ºÉèÀæÊ÷ÓÐx¿Ã£»ÄÇôÌÒÊ÷¾ÍÓÐ120%x¿Ã£¬Ôò£º
120%x-x=40£¬
0.2x=40£¬
x=200£»
120%x=120%¡Á200=240£¨¿Ã£©£»
´ð£ºÀæÊ÷ÓÐ200¿Ã£¬ÌÒÊ÷ÓÐ240¿Ã£®
¢Û£¨300-50£©
![](http://thumb.1010pic.com/pic5/latex/157724.png)
=250¡Â
![](http://thumb.1010pic.com/pic5/latex/335.png)
=625£¨±¾£©£»
´ð£º¹º½ø¿Æ¼¼Êé625±¾£®
¢Ü½â£ºÓÉС±µÄÈÝÁ¿ÊÇ´ó±µÄ
![](http://thumb.1010pic.com/pic5/latex/96.png)
ÄÇôÁ½¸ö´ó±Ï൱ÓÚ8¸öС±£»
ÿ¸öС±µÄÈÝÁ¿£º
1020¡Â£¨9+2¡Â
![](http://thumb.1010pic.com/pic5/latex/96.png)
=1020¡Â£¨9+8£©£¬
=1020¡Â17£¬
=60£¨ºÁÉý£©£»
ÿ¸ö´ó±µÄÈÝÁ¿£º
60¡Â
![](http://thumb.1010pic.com/pic5/latex/96.png)
´ð£ºÐ¡±µÄÈÝÁ¿ÊÇ60ºÁÉý£¬´ó±µÄÈÝÁ¿ÊÇ240ºÁÉý£®
¢Ý300¡Â£¨
![](http://thumb.1010pic.com/pic5/latex/13.png)
![](http://thumb.1010pic.com/pic5/latex/335.png)
=300¡Â
![](http://thumb.1010pic.com/pic5/latex/63.png)
=3000£¨Ã×£©£»
´ð£ºÕâÌõ¹«Â·³¤3000Ã×£®
¢ß¼×£º200¡Á3¡Á90%
=600¡Á90%
=540£¨Ôª£©£»
ÒÒ£º200¡Á
![](http://thumb.1010pic.com/pic5/latex/407139.png)
=200¡Á
![](http://thumb.1010pic.com/pic5/latex/27117.png)
=160¡Á3
=480£¨Ôª£©£»
±û£º200¡Á3-200¡Á3¡Á30%
=600-180
=420£¨Ôª£©
540£¾480£¾420£»
´ð£ºµ½±ûÉ̳ÇÂò±ãÒË£®
·ÖÎö£º¢Ù°ÑÈ«ÊéµÄ×ÜÒ³Êý¿´³Éµ¥Î»¡°1¡±£¬Ê£ÏµÄÒ³ÊýռȫÊéµÄ£¨1-
![](http://thumb.1010pic.com/pic5/latex/36.png)
¢ÚÉèÀæÊ÷ÓÐx¿Ã£»ÄÇôÌÒÊ÷¾ÍÓÐ120%x¿Ã£»ÓÃÌÒÊ÷µÄ¿ÃÊý¼õÈ¥ÀæÊ÷µÄ¿ÃÊý¾ÍÊÇ40¿Ã£¬ÓÉ´ËÁгö·½³ÌÇó½â£»
¢ÛÓùÊÊÂÊéµÄ±¾Êý¼õÈ¥50±¾¾ÍÊǿƼ¼Êé±¾ÊýµÄ
![](http://thumb.1010pic.com/pic5/latex/335.png)
¢Ü±¾ÌâµÄ¹Ø¼üÔÚÓÚС±µÄÈÝÁ¿ÊÇ´ó±µÄ
![](http://thumb.1010pic.com/pic5/latex/96.png)
¢Ý°ÑÕâÌõ¹«Â·µÄ×ܳ¤¶È¿´³Éµ¥Î»¡°1¡±£¬ÐÞµ½Öеã¾ÍÊÇÐÞÁËÕâÌõ·µÄ
![](http://thumb.1010pic.com/pic5/latex/13.png)
![](http://thumb.1010pic.com/pic5/latex/13.png)
![](http://thumb.1010pic.com/pic5/latex/335.png)
¢Þ¼×£º´ò¾ÅÕÛ£¬ÊÇÖ¸ÏÖ¼ÛÊÇÔ¼ÛµÄ90%£¬¸ù¾ÝÔ¼ÛÇó³ö200¸öƹÅÒÇòµÄÔ¼Û£¬ÔÙÇó³ö200¸öƹÅÒÇòµÄÏÖ¼Û£»
ÒÒ£º¡°Âò°ËËͶþ¡±£¬Ö»ÒªÂò200¸öµÄ
![](http://thumb.1010pic.com/pic5/latex/27117.png)
±û£º100Ôª»¹30ÔªÏֽ𣬷µµÄÏÖ½ðÊÇÓ¦¸¶¼Û¸ñµÄ30%£¬ÓÃ×ܼۼõÈ¥·µµÄÏֽ𼴿ÉÇó³öÒª»¨µÄÇ®£®
µãÆÀ£º½â¾öʵ¼ÊÎÊÌ⣬ÏÈת»¯ÊýѧÎÊÌ⣬ÕÒ³öµ¥Î»¡°1¡±£¬ÔÙ¸ù¾ÝÊýÁ¿¹ØϵÁÐʽÇó½â£®
![](http://thumb2018.1010pic.com/images/loading.gif)
Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿