表格 - 例题解析



方向(第1题到第5题):使用下表回答以下问题

餐厅上半年使用的各种食品数量(公斤)

食品名称一月二月三月四月五月六月
大米250230210260240220
小麦320340280290300360
240210200210160150
豆类360300320245235250
蔬菜380390385375355370
其他460485440460475480

问题1 - 四月份使用的糖量约占该月食品总量的百分比是多少?

A - 21%

B - 18%

C - 11%

D - 25%

答案 - C

解释

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%

问题2 - 所有月份大米用量的平均值与所有月份小麦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

解释

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

问题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

解释

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

问题4 - 给定月份豆类总量与蔬菜总量之差是多少?

A - 545公斤

B - 540公斤

C - 450公斤

D - 380公斤

答案 - C

解释

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

问题5 - 三月份食品总量与四月份食品总量的比例是多少?

A - 366 : 367

B - 361 : 365

C - 367 : 368

D - 248 : 245

答案 - C

解释

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题到第10题):使用下表回答以下问题

各个工厂六个班次的工人数量。

班次\工厂LMNOP
上午7点到11点7.58.07.87.598.32
上午11点到下午3点6.387.07.166.57.5
下午3点到晚上7点6.57.286.356.157.24
晚上7点到晚上11点7.85.256.06.06.5
晚上11点到凌晨3点5.55.05.105.55.7
凌晨3点到上午7点4.23.04.123.52.15

问题6 - 工厂O的工人总数约占工厂L工人总数的百分比是多少?

A - 89%

B - 80%

C - 96%

D - 93%

答案 - D

解释

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%

问题7 - 工厂P各个班次工人的平均人数是多少?

A - 6045

B - 6200

C - 6235

D - 6150

答案 - C

解释

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

问题8 - 工厂M各个班次工人的总数与工厂O各个班次工人的总数之差是多少?

A - 290

B - 275

C - 295

D - 270

答案 - A

解释

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

问题9 - 工厂L和M在晚上11点到凌晨3点的班次工人数总和与工厂O和P在同一班次工人数总和的比例是多少?

A - 13:14

B - 15:16

C - 13:15

D - 以上都不是

答案 - B

解释

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

问题10 - 所有工厂上午7点到11点的班次工人的平均人数与所有工厂晚上7点到11点的班次工人的平均人数之和是多少?

A - 11502

B - 15142

C - 14520

D - 14152

答案 - D

解释

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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