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vivek.kapoor83
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tuf ques..
This topic has expert replies
Source: Beat The GMAT — Data Sufficiency |
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raju232007
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Before migration the ratio of no of males to females is 3:7
After migration the ratio has been altered and the new ratio of males to females is 2:8
Using the given formula in the question stem the ratio of migration of male geese to the rate of migration of female geese can be determined..
(migrating(males)/total males)/(migrating(females)/total females)
(2/3)/(8/7)=7/12
Hence the ans is B...
After migration the ratio has been altered and the new ratio of males to females is 2:8
Using the given formula in the question stem the ratio of migration of male geese to the rate of migration of female geese can be determined..
(migrating(males)/total males)/(migrating(females)/total females)
(2/3)/(8/7)=7/12
Hence the ans is B...
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cubicle_bound_misfit
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let there be originally 100 geese.
30 male 70 female.
some geese say X migrated out of x again x/5 male, 4/5 x female
so we have to find
(male geese migrating/number of male )* (number of female/female geese migarating)
[x/5:4x/5 == .2x/.8x==2x/8x]
hence,(2x/30)*(70/8x) == 7/12.
hope that will help.
regards,
30 male 70 female.
some geese say X migrated out of x again x/5 male, 4/5 x female
so we have to find
(male geese migrating/number of male )* (number of female/female geese migarating)
[x/5:4x/5 == .2x/.8x==2x/8x]
hence,(2x/30)*(70/8x) == 7/12.
hope that will help.
regards,
Cubicle Bound Misfit
