餅圖 - 例題解析

方向（第1題到第4題）：下面的餅圖顯示了房屋建造成本的構成。假設總建造成本為600000盧比，回答下面的問題。

第1題 - 用於水泥的支出為

答案 - C

解釋

Amount spent on cement= Rs (72/360*600000) = Rs 120000

第2題 - 用於工程的支出比用於鋼材的支出多

答案 - B

解釋

Amount spent on labor=Rs (90/360*600000)=Rs 150000. 
Sum spent on steel =Rs (54/360*600000) =Rs 90000 
Excess=Rs (150000-90000=Rs 60000 
Let 60000=x% of 600000. At that point x/100*600000=60000. 
∴ x=10% of aggregate expense.

第3題 - 用於水泥、鋼材和監管的支出佔總建設費用的多少百分比？

答案 - C

解釋

Amount spent on concrete, steel and supervision 
=Rs {72+54+54/360*600000} =Rs 300000 
= half of aggregate expense of development.

第4題 - 用於工程的支出比用於監管的支出多

答案 - D

解釋

(Amount spent on work)- (Amount spent on supervision) 
=Rs (90/360*600000) - Rs (54/360*6000000) 
=Rs (150000-90000) =Rs 60000.

方向（第5題到第9題）：請根據以下資訊回答下面的問題。

第5題 - 直接錄用和晉升的助理之間有什麼區別？

答案 - A

解釋

Total number of assistant= 15% of 7000 = (15/100*7000) =1050. 
Number of direct recruits= 40% of 1050= (40/100*1050) =420 
Number of promotee associates = (1050-420) =630. 
Required contrast = (630-420) =210

第6題 - 晉升的I級職員大約佔直接錄用I級職員的多少百分比？

答案 - C

解釋

) Number of clerk I =19% of 7000= (7000*19/100) =1330. 
Number of direct selects =90% of 1330= (90/100*1330) =1197. 
Number of promotes= (1330-1197) =133 
∴ required % = (133/1197*100) %= 13300/1197%=10.8%

第7題 - 有多少名員工是主管？

答案 - A

解釋

Number of supervisors=17% of 7000=(7000*17/100)=1190.

第8題 - 各類員工中直接錄用的總人數是多少？

答案 - A

解釋

Average rate of direct selects = 1/3 (30+40+50+90+30+90+70)=400/7%. 
Required total=400/7% of 7000= (7000*400/7*1/100) =4000

第9題 - 哪一類員工的直接錄用人數最多？

答案 - A

解釋

Total rate of clerk I and officer I= (19+8)%=27%. 
Rate of direct Recruits=90% each. 
Hence, clerk I and Officer I together have most extreme number of direct enrolls.

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