题目的意思就是新增加的shipment中,number of defective chips in the
shipment与total number of chips in the shipment的比例,与s1,s2,s3,s4的和
的比例是相同的,列式子就是：设新增加的shipment中number of defective
chips in the shipment为X,则X/60000=(2+5+6+4)/(5000+12000+18000+16000),
得到X=20.看看对不,加油!
请教GMAT数学题一道
请教GMAT数学题一道
29.A computer chip manufacturer expects the ratio of the number of defective chips to the total number of chips in all future shipments to equal the corresponding ratio for shipments S1,S2,S3 and S4 combined,as shown in the following table.What is the expected number of defective chips in a shipment of 60,000 chips?
Shipment Number of defective chips in the shipment Total number of chips in the shipment
S1 2 5,000
S2 5 12,000
S3 6 18,000
S4 4 16,000
a)14 b)20 c)22 d)24 e)25
所给答案是b.
29.A computer chip manufacturer expects the ratio of the number of defective chips to the total number of chips in all future shipments to equal the corresponding ratio for shipments S1,S2,S3 and S4 combined,as shown in the following table.What is the expected number of defective chips in a shipment of 60,000 chips?
Shipment Number of defective chips in the shipment Total number of chips in the shipment
S1 2 5,000
S2 5 12,000
S3 6 18,000
S4 4 16,000
a)14 b)20 c)22 d)24 e)25
所给答案是b.
英语人气：164 ℃时间：2020-03-21 08:41:18
优质解答
我来回答
类似推荐
猜你喜欢
- 1下列标点符号运用错误的一项是()
- 2ou look angry .what is the mattetr I found my elder sister ___my diary when l got home.
- 3如果有人用"好事不出门,丑事传千里."的古语来说服你,你可以用叶绍翁的两句诗句来反驳他,这两句诗是?/
- 4如图所示，直线AB、CD相交O，OE⊥AB于O，且∠DOE=3∠COE，求∠AOD的度数．
- 5susan can't drive a car的同义句
- 6一个三位小数取近似值是0,80,这个三位小数最大可能是( ) 最小可能是( )
- 7下面我写题~1、在括号内填近义词.（ ）虚（ ）假 大（ ）小（ ）
- 8车从甲地开往乙地,途径某地时,已行路程是剩下的3/5,再行27千米,已行路程是剩下的3/2,求距离?
- 9一片绿叶的回忆：课文的开头和结尾在文章中起什么作用?
- 10初一语文17课生字拼音与注解