In a tree, 1/5 of the birds are robins while the rest are bluejays. If 1/2 of the robins are female and 2/5 of the bluejays are female, what fraction of the birds in the tree are male?
Choose the correct choice from the following answers.
A) 9/25	B) 12/25	C) 17/25	D) 29/50	E) 33/50
The fraction of birds that are male robins is (1/2)(1/5)=1/10.   The fraction of birds that are male bluejays is (3/5)(4/5)=12/25.   The total fraction of male birds is 1/10 + 12/25 = 29/50.   The answer is 29/50.
<result>D</result>
In a tree, 1/5 of the birds are robins while the rest are bluejays. If 1/2 of the robins are female and 2/5 of the bluejays are female, what fraction of the birds in the tree are male?