来自白志华的问题
【请教GMAT数学题一道29.AcomputerchipmanufacturerexpectstheratioofthenumberofdefectivechipstothetotalnumberofchipsinallfutureshipmentstoequalthecorrespondingratioforshipmentsS1,S2,S3andS4combined,asshowninthef】
请教GMAT数学题一道
29.AcomputerchipmanufacturerexpectstheratioofthenumberofdefectivechipstothetotalnumberofchipsinallfutureshipmentstoequalthecorrespondingratioforshipmentsS1,S2,S3andS4combined,asshowninthefollowingtable.Whatistheexpectednumberofdefectivechipsinashipmentof60,000chips?
ShipmentNumberofdefectivechipsintheshipmentTotalnumberofchipsintheshipment
S125,000
S2512,000
S3618,000
S4416,000
a)14b)20c)22d)24e)25
所给答案是b.
1回答
2020-04-26 23:10