[問題]天山7-14 (傷心沒有討論到這題) 乾恩!

[lpwpete]

[問題]天山7-14
A total of 30 percent of the geese included in a certain study were make. If some of the geese migrated during the study and 20 percent of the migrating geee were male, what was the migration rate for the make geese to the migration rate for the female geese?
A. 1/4
B. 7/12
C. 2/3
D. 7/8
E. 8/7
Ans: B (句意不太懂!)

[celivia]

[問題]天山7-14
A total of 30 percent of the geese included in a certain study were make. If some of the geese migrated during the study and 20 percent of the migrating geee were male, what was the migration rate for the make geese to the migration rate for the female geese?
A. 1/4
B. 7/12
C. 2/3
D. 7/8
E. 8/7
Ans: B (句意不太懂!)

如果把make改成male則可得B
設migration rate各為M和F
30M/70F=20/80
=>M/F=7/12

[lpwpete]

真是好人!
現在我懂了! 乾恩喔!

[celivia]

真是好人!
現在我懂了! 乾恩喔!

其實我也想了很久才想到是題目錯字
如果題目沒錯字應該不難