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浜嬫キ(y猫)鍠綅鑰冭│鑱锋脯鎶€宸э細甯歌鍒╂饯鍟忛鐨勮В椤屾柟娉�
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涓€銆佸埄娼ゅ晱椤岀殑姒傚康鍙婂叕寮�
鍒╂饯锛氬埄娼ゆ槸閵峰敭鐨勬敹鍏ユ墸闄ゆ垚鏈児鏍煎悗鐨勪綑椤嶃€�
鍒╂饯鐜囷細鍙嶆噳(y墨ng)涓€瀹氭檪鏈熷埄娼ゆ按骞崇殑鎸囨(bi膩o)锛屾寚鍒╂饯鑸囨垚鏈殑姣旂巼銆�
灏嶄簬鍒╂饯鍟忛锛岀爺绌剁殑涔熸槸鍞児銆佹垚鏈€佸埄娼�銆佸埄娼ょ巼浠ュ強鎵撴姌鐨勫晱椤�銆傚皪浜庨€欎簺姒傚康鎴戝€戞洿濂界殑鍙互閫氶亷鍏紡渚嗕簡瑙�銆�
鍒╂饯=鍞児-鎴愭湰
鍒╂饯鐜�=鍒╂饯/鎴愭湰=(鍞児-鎴愭湰)/鎴愭湰涓€鍞児/鎴愭湰-1
鍞児=鎴愭湰×(1+鍒╂饯鐜�)
鎴愭湰=鍞児/(1+鍒╂饯鐜�)
鎵撴姌鐜�=鎵撴姌鍚庣殑鍞児/鍘熶締鐨勫敭鍍�=(1-鎶樺悗鐨勫埄娼ょ巼)/(1+鍘熶締鐨勫埄娼ょ巼)
浜�銆佸埄娼ゅ晱椤岀殑甯歌瑙i鏂规硶
鍒╂饯鍟忛甯歌鐨勮В椤屾柟娉曟湁鏂圭▼娉曘€佺壒鍊兼硶銆�
鏂圭▼娉曪細閫氶亷椤屽共鎵€绲︾殑宸茬煡姊濅欢锛屾壘鍒扮瓑閲忕殑闂�(gu膩n)绯�锛屽埄鐢ㄥ叕寮忛€�(j矛n)琛屽垪寮忔眰瑙�銆�
渚�1. 鐢插晢搴楃敤8000鍏冭臣閫�(j矛n)鑻ュ共浠跺悓娆惧瑁濓紝瀹氬児58鍏�锛屽叏閮ㄥ敭鍑�;涔嬪悗鍙堢敤17600鍏冭臣閫�(j矛n)鍚岀ó澶忚锛屾暩(sh霉)閲忔槸绗竴娆$殑2鍊�锛屾瘡浠堕€�(j矛n)鍍规瘮绗竴娆″4鍏冿紝浠嶆寜鍘熷畾鍍瑰嚭鍞�锛屽叏閮ㄥ敭鍑恒€傚晱瑭插晢搴楀叡鐩堝埄澶氬皯鍏�?
A.3600 B.5600 C.9200 D.9800
銆愯В鏋愩€戝凡鐭ラ骞蹭腑绲﹀嚭鍏╂璩奸€�(j矛n)鐨勫瑁濈殑鏁�(sh霉)閲�锛岀浜屾鏄涓€娆$殑2鍊�锛屼互鍙婅不绛変簬姣忎欢鐨勯€�(j矛n)鍍逛箻浠ヨ臣閫�(j矛n)鐨勬暩(sh霉)閲忕⒑绔嬬瓑閲忛棞(gu膩n)绯汇€傝ō(sh猫)鐢插晢搴楃涓€娆¤臣閫�(j矛n)澶忚 x 浠�锛屾瘡浠剁殑閫�(j矛n)鍍圭偤 y 鍏�锛屽墖绗簩娆¤臣閫�(j矛n)澶忚 2x 浠�锛屾瘡浠剁殑閫�(j矛n)鍍圭偤(y+4)鍏�銆�
鏍规摎(j霉)椤屾剰鏈� xy=8000……鈶�
2x×(y+4)=17600……鈶�
灏団憽寮忓睍闁嬶紝骞跺皣鈶犱唬鍏�锛屽彲瑙e緱 x=200锛寉=40銆�
鍓囩涓€娆¤臣閫�(j矛n)鐨勫瑁濆敭鍑虹泩鍒� 200×(58-40)=3600 鍏�;绗簩娆¤臣閫�(j矛n)鐨勫瑁濆叏閮ㄥ敭鍑虹泩鍒� 2×200×(58-40-4)=5600 鍏�銆傚洜姝よ┎鍟嗗簵鍏辩泩鍒� 3600+5600=9200 鍏冦€傞伕闋呯偤C銆�
鐗瑰€兼硶锛氬埄娼ゅ晱椤屼腑锛岀暥(d膩ng)椤屽共鎵€绲︾殑鐐虹浉灏嶆暩(sh霉)锛屾墍姹傛豢瓒充箻闄ら棞(gu膩n)绯�锛屼笖灏嶆噳(y墨ng)閲忔湭鐭ョ殑椤岀洰涓彲浠ヨō(sh猫)鐗瑰€兼眰瑙c€�
渚�2. 鍟嗗簵璩奸€�(j矛n)鍏╃ó鐜╁叿锛屽凡鐭ョ敳绋帺鍏风殑閫�(j矛n)鍍规槸涔欑ó鐜╁叿閫�(j矛n)鍍圭殑90%锛屼笖鍏╃ó鐜╁叿鐨勯€�(j矛n)璨ㄩ噺鐩稿悓锛屽師瑷堝妰鍧囨寜鐛插埄15%鍞嚭锛岀暥(d膩ng)涔欑帺鍏峰彧鍞嚭30%锛岀偤浜嗙洝蹇洖绫犺硣閲�锛屽晢搴楁焙瀹氬皣涔欑帺鍏锋寜鐓х敳鐜╁叿鐨勫敭鍍归姺鍞�锛岄偅涔堣┎鍟嗗簵鏈€绲傜嵅鍒╃偤澶氬皯?
A.9.6% B.10.7% C.11.6% D.13.1%
銆愯В鏋愩€戣ō(sh猫)涔欏晢鍝侀€�(j矛n)璨ㄥ児鏍�1鍏冿紝閫�(j矛n)璨ㄩ噺鐐�10鍊�锛屾牴鎿�(j霉)椤屾剰锛岀敳鍟嗗搧鐨勯€�(j矛n)璨ㄥ児鏍肩偤0.9鍏冿紝閫�(j矛n)璨ㄩ噺鐐�10鍊�锛屾墍浠ョ敳鍟嗗搧鐛插緱鍒╂饯鐐�0.9×0.15×10=1.35锛屽敭鍍圭偤0.9×(1+0.15)=1.035锛屾墍浠ヤ箼绋晢鍝佺殑鍒╂饯鐐�1×0.15×3+(1.035-1)×7=0.695锛屾墍浠ョ嵅鍒╃偤(1.035+0.695)÷(9+10)≈10.7%銆傞伕闋呯偤B銆�
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