7 06338172003 E--mailmmffss@126.com

1.2.3.4.5.

: ,

,

,.,.

,

1),:

(2)

(3)

=,

==

() : = + + ===

() .,.

AA1A2A3 A1

A 20 30 600 13 3 0.5 0.61.50 1.80 25 8 0.5 0.62.50 3.00 36 14 0.5 0.63.00 3.6014 7 8.4

A2A3

A1 1 600 7 8.4 615.40A2 1 150 10 11.2 171.20A3 3 100 15 20 135 850 32 39.6 921.6

AB B AB

A 850 32 39.6 891.6B 1050 26 18 1094 1900 60 60 1985.6

1.

1

= = 12

3 = =4

= -

=+-

1000 550004800200 1000

=4800-5000=-200200 1000100120

=10005=5000=4800+100-120=4780 =4780-5000=-220=

900100120=9005=4500=4800+100-120=4780=4780-4500=+280

=

(2),,(),,,

=

= -

3 :=

+=+ =+ - =+ -

=- ,,300,50,.20,2.7000,3050.:

=300+50=350()=35020=7000()=7000+30-50=6980()=( 6980 7000 ) 2= - 20()

2. 1

, := - 2:

=- ,,,,:

8 1680011200162401160084008800

=1680011200=1.5=1624011600=1.4=84001.5=12600=88001.4=12320=12320-12600= - 280

3. ,=-

= =

, ,,,,

= += = =- P228

.

1. = -

2. = =(1-)

3041 600588 =60030-58830=+360

=588600=0.98 =60030(1-0.98)=+360()

300, 50,,48,600,31000,900.:

30048=14400:48600=28800 4320031000-28800=2200(50-48) 300=600 46000

, ,.:= +

= = ,,

A: 20000,-600.1500,.

50000 +2497.455%,,60000. :.

-600+2497.45 60000+10000100%=71%=(50000+2497.45)5%=2624.87()==20000+50000-60000=10000

60000+600002.71%+1500+2624.87=65750.87()

=10000+100002.71%=10271()() P229 =

, ,

(

1.

=

2.

=

3.

=

,, ,A 150 ,3.50;B210,2.4.500,:1.25,0.84,0.95. ,:

=1503.5+2102.4=1029()

=5001.25=625()

=5000.84=420()

=5000.95=475()

=1029+625+420+475=2549()

() : =- 1.

= =+ =+=+)((+)== + +

=++()

: ,,; ,,;..

1 =-=(-) =(-)

:

18002.2540502.203900 - 9029004.82139785.1014790+8121802818750+722

::200

2.258. 51700382518004050+2254.8214280013496290013978+4821732118028+707

2. =-=( - )=(-)

::200

(19) 380019722004000208000038004000

3. (1)

=-=- =() (-)

(5400/4000-1.4) 4000 = -200

1.43800532040005400280-200

2 =-=-=-= -

(4000-3800) 0.65=130(4180-4000) 0.65=1172400-2717=-317

41800.6527173800247040002400

130 117 - 317

1.,.2.,.,,.

, MN MAB1000NCD100

188005400528019200A200050615B2100302017C3600106066D17001890949400108176192

2 50 30 100

ABCD40004200720034001880025001500500900540018060018002700528015001700660094001920081808000161001640048680

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