表格 - 例題解析



方向(第1題到第5題):使用下表回答以下問題

餐廳上半年使用的各種食品數量(公斤)

食品名稱一月二月三月四月五月六月
大米250230210260240220
小麥320340280290300360
240210200210160150
豆類360300320245235250
蔬菜380390385375355370
其他460485440460475480

問題1 - 四月份使用的糖量約佔該月食品總量的百分比是多少?

A - 21%

B - 18%

C - 11%

D - 25%

答案 - C

解釋

Quantity of sugar used in April = 210 Kg
Total quantity of food items used in april month = (260+290+210+245+375+460) kg
= 1860 kg
Required% =  (210/1840*100)% = 11.4% ≅ 11%

問題2 - 所有月份大米用量的平均值與所有月份小麥用量的平均值之差是多少?

A - 60公斤

B - 75公斤

C - 80公斤

D - 90公斤

答案 - D

解釋

Average quantity of rice used = (250+230+210+260+240+220)/6 = 1410/6 = 235 kg
Average quantity of wheat used =(320+340+280+290+300+360) = 1890/6 = 315 kg
Required difference = (315-235)= 90 kg

問題3 - 所有月份其他物品用量的平均值是多少?

A - 386.45公斤

B - 441.28公斤

C - 356.56公斤

D - 466.67公斤

答案 - D

解釋

Average quantity of misc. items = (460+485+440+460+475+480)/6 =2800/6 = 466.67 kg

問題4 - 給定月份豆類總量與蔬菜總量之差是多少?

A - 545公斤

B - 540公斤

C - 450公斤

D - 380公斤

答案 - C

解釋

Total quantity of pulses consumed =(360+300+320+245+235+250) =1710 kg
Total quantity of vegetable consumed = (380+390+385+375+355+370 )=2255Kg
Required difference = (2255-1710)=  545 kg

問題5 - 三月份食品總量與四月份食品總量的比例是多少?

A - 366 : 367

B - 361 : 365

C - 367 : 368

D - 248 : 245

答案 - C

解釋

total quantity of food items consumed in march =(210+280+200+245+375+460)=1835 
total quantity of food items consumed  in  april =(260+290+210+245+375+460) =1840kg
required ratio =   1835: 1840 = 367:368

方向(第6題到第10題):使用下表回答以下問題

各個工廠六個班次的工人數量。

班次\工廠LMNOP
上午7點到11點7.58.07.87.598.32
上午11點到下午3點6.387.07.166.57.5
下午3點到晚上7點6.57.286.356.157.24
晚上7點到晚上11點7.85.256.06.06.5
晚上11點到凌晨3點5.55.05.105.55.7
凌晨3點到上午7點4.23.04.123.52.15

問題6 - 工廠O的工人總數約佔工廠L工人總數的百分比是多少?

A - 89%

B - 80%

C - 96%

D - 93%

答案 - D

解釋

Total number of workers from factory O =(7.59+6.5+6.15+6+5.5+3.5)thousand 
=(35.24*1000)= 35240
Total number of workers from factory L =(7.5+6.38+6.5+7.8+5.5+4.2)
=(37.88 *1000) =37880
∴ Required % =( 35240/ 37880* 100)% = 93.03%= 93%

問題7 - 工廠P各個班次工人的平均人數是多少?

A - 6045

B - 6200

C - 6235

D - 6150

答案 - C

解釋

Average number of workers in factory P = (8.32+7.5+7.24+6.5+5.7+2.15)/6 *1000  
=37410 /6 = 6235

問題8 - 工廠M各個班次工人的總數與工廠O各個班次工人的總數之差是多少?

A - 290

B - 275

C - 295

D - 270

答案 - A

解釋

Total number of workers in factory M =(8+7+7.28+5.25+5+3)*1000= (35.53*1000)  
=35530
Total number of workers in factory O = 35240
Required difference =(35530- 35240 ) =290

問題9 - 工廠L和M在晚上11點到凌晨3點的班次工人數總和與工廠O和P在同一班次工人數總和的比例是多少?

A - 13:14

B - 15:16

C - 13:15

D - 以上都不是

答案 - B

解釋

Number of workers in factories Land M in the shift of 11 p.m to 3.am. =(5.5+5)*1000 = (10.5*1000) = 10500.
Numbers of workers in factories O and P in the shift of 11 p.m to 3.am =(5.5+5.7)*1000 = (11.2*1000)  =11200
Required  ratio = 10500 : 11200 =  15 : 16

問題10 - 所有工廠上午7點到11點的班次工人的平均人數與所有工廠晚上7點到11點的班次工人的平均人數之和是多少?

A - 11502

B - 15142

C - 14520

D - 14152

答案 - D

解釋

Average number of workers working in the shift of 7 a.m to 11a.m from all factories  
=(7.5+8+7.8+7.59+8.32)*1000/5 = 39210/5 = 7842
Average number of workers working in the shift of 7 a.m to 11p.m from all factories      
=(7.8+5.25+6+6+6.5)*1000 /5  = 31550/5 =  6310 
Required total = 7842- 6310   = 14152
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