小明看一本书，随意打开书后，看到左右厅两页的页码和是185。小明打开的是哪两页？ 小明打开一本书，发现左右两页的页码相加正好等于131。请你算...
\u5c0f\u660e\u770b\u4e00\u672c\u4e66\uff0c\u7ffb\u5f00\u4e66\u540e\uff0c\u770b\u5230\u4e24\u9875\u7684\u9875\u7801\u4e4b\u548c\u662fI2l\uff0c\u8bf7\u4f60\u7b97\u4e00\u7b97\uff0c\u5c0f\u660e\u7ffb\u5f00\u7684\u662f\u54ea\u4e24\u9875\uff1f\uff08121-1\uff09\u00f72=60\uff08\u9875\uff09
60+1=61\uff08\u9875\uff09
\u4f60\u597d\uff0c\u672c\u9898\u5df2\u89e3\u7b54,\u5982\u679c\u6ee1\u610f
\u8bf7\u70b9\u53f3\u4e0a\u89d2\u201c\u91c7\u7eb3\u7b54\u6848\u201d\u3002
\u7b97\u672f\u65b9\u6cd5\uff1a
\uff08131-1\uff09\u00f72
=130\u00f72
=65\uff08\u9875\uff09
65+1=66\uff08\u9875\uff09
\u7b54\uff1a\u5c0f\u660e\u6253\u5f00\u7684\u662f\u7b2c65\u548c66\u9875\u3002
\u65b9\u7a0b\u65b9\u6cd5\uff1a
\u89e3\uff1a\u8bbe\u5c0f\u660e\u6253\u5f00\u7684\u662f\u7b2cx\u9875\u548c\u7b2c\uff08x+1\uff09\u9875\uff0c\u5f97
x+\uff08x+1\uff09=131
x+x+1=131
2x=131-1
2x=130
x=65
x+1=66\uff08\u9875\uff09
\u7b54\uff1a\u5c0f\u660e\u6253\u5f00\u7684\u662f\u7b2c65\u548c66\u9875\u3002
x+(x+1)=185
2x+1=185
2x=184
x=92
x+1=93
185－1＝185
184÷2＝92页
92＋1＝93页
92、93
92 93
185－1＝184
绛旓細杩鏈功鏈600椤碉紝涔熷氨鏄灏忔槑鐪嬩簡100+20=120,鐩稿綋浜600椤电殑浜斿垎涔嬩竴銆
绛旓細杩欓亾棰樺簲璇ヤ笉鏄緢涓ヨ皑銆傚簲璇ユ槸灏忔槑鐪嬩竴鏈功鐪浜嗕笁澶┿傛垨鑰呮槸绗笁澶╃湅浜嗕節椤碉紝姝ｅソ鐪嬪畬銆傛湁浜嗚繖鏍风殑闄勫姞鏉′欢锛屾墠鍙互鍋氳繖閬撻銆傜浜屽ぉ鐪嬩簡鍓╀笅鐨勪竴鍗娿傜涓夊ぉ鐪嬪畬浜嗐傞偅涔堢浜屽ぉ鍜岀涓夊ぉ鐪嬬殑涓鏍峰銆傞兘鏄節椤点傝岀涓澶╃湅浜嗚繖鏈功鐨勪竴鍗娿傞偅涔堢浜屽ぉ鍜岀涓夊ぉ鍔犺捣鏉ュ氨鏄繖鏈功鐨勫彟涓鍗娿備篃灏...
绛旓細鍥犱负锛氬凡缁忕湅鐨勯〉鏁+鍓╀綑鐨勯〉鏁=涓鏈功鐨勬婚〉鏁帮紙涓瀹氾級锛屾槸鍜屼竴瀹氾紝鎵浠灏忔槑鐪嬩竴鏈功锛宸茬粡鐪嬬殑椤垫暟鍜屽墿浣欑殑椤垫暟涓嶆垚姣斾緥锛涙晠绛旀涓猴細脳锛
绛旓細1-1/4-1/2锛1/4 50梅1/4=200锛堥〉锛夌瓟锛氳繖鏈功涓鍏辨湁200椤点
绛旓細灏忔槑鐪嬩竴鏈功,绗竴澶╃湅鐨勯〉鏁颁笌杩欐湰涔︽婚〉鏁扮殑姣旀槸涓夋瘮涓,濡傛灉鍐嶇湅15椤,姝ｅソ鐪嬪畬杩欐湰涔︾殑涓鍗婂効,杩欐湰涔︽湁澶氬皯椤?... 灏忔槑鐪嬩竴鏈功,绗竴澶╃湅鐨勯〉鏁颁笌杩欐湰涔︽婚〉鏁扮殑姣旀槸涓夋瘮涓,濡傛灉鍐嶇湅15椤,姝ｅソ鐪嬪畬杩欐湰涔︾殑涓鍗婂効,杩欐湰涔︽湁澶氬皯椤? 灞曞紑 ...
绛旓細绗簩澶╃湅浜嗗墿涓嬬殑涓鍗婏紝閭ｄ箞娌＄湅鐨勪篃鏄墿涓嬬殑涓鍗婏紝绗笁澶╃湅浜4椤,姝ｅソ銆傜浜屽ぉ鐪嬩簡鍓╀笅鐨勪竴鍗=4椤碉紝绗簩澶╁墿涓8椤 绗竴澶╃湅浜嗗叏涔︾殑涓鍗=绗簩澶╁墿涓8椤 鍏ㄤ功=16椤点
绛旓細锛35%-20%锛壝20 =0.15梅0.2 =0.75X100 =75 绛旓細绗簩澶╂瘮绗竴澶╁鐪嬬櫨鍒嗕箣75
绛旓細宸茬湅鐨 锛氬墿涓嬬殑锛1 锛4鈭村凡鐪嬬殑鍗犳暣鏈功鐨1/5 鍓╀笅鐨勫崰鏁存湰涔︾殑4/5 鏁存湰涔︾殑椤垫暟锛48梅4/5=60椤 宸茬湅鐨勯〉鏁帮細60x1/5=12椤 12椤电湅涓ゅぉ,84椤电湅8澶 鈭村叡鐪嬩簡2+8=10澶
绛旓細1-60%=40 480梅40%=1200(椤)缈侀敠鏂囪В绛 鎵甯姪 璇烽噰绾虫垨缁欎簣璇 鍏剁枒闂 鍚戞垜姹傚姪 O(鈭鈭)O璋㈣阿
绛旓細杩鏈功涓鍏230椤点傚垎鏋愯繃绋嬪涓嬶細灏忔槑鐪嬩竴鏈鏁呬簨涔︼紝绗竴澶╃湅浜30椤碉紝浠ュ悗姣忓ぉ姣斿墠涓澶╁鐪8椤碉紝鍒欎互鍚庢瘡澶╃湅鐨勯〉鏁颁负鍓嶄竴澶╃殑鍩虹涓婂啀澶5椤点30+(30+8)+(30+16)+(30+24)+(30+32)=30脳5+80 =230椤
