In a tree, 3/5 of the birds are parrots while the rest are toucans. If 1/3 of the parrots are female and 3/4 of the toucans are female, what fraction of the birds in the tree are male?
Select
A) 1/2 B) 2/5 C) 3/5 D) 3/10 E) 7/10
The fraction of birds that are male parrots is (2/3)(3/5)=2/5.   The fraction of birds that are male toucans is (1/4)(2/5)=1/10.   The total fraction of male birds is 2/5 + 1/10 = 1/2.   The answer is 1/2.
<result>A</result>
In a tree, 3/5 of the birds are parrots while the rest are toucans. If 1/3 of the parrots are female and 3/4 of the toucans are female, what fraction of the birds in the tree are male?