In a tree, 2/5 of the birds are robins while the rest are bluejays. If 1/3 of the robins are female and 2/3 of the bluejays are female, what fraction of the birds in the tree are male?
Choose the correct answer:	A) 3/5	B) 4/15	C) 7/15	D) 8/15	E) 17/30
The fraction of birds that are male robins is (2/3)(2/5)=4/15.   The fraction of birds that are male bluejays is (1/3)(3/5)=1/5.   The total fraction of male birds is 4/15 + 1/5 = 7/15.   The answer is 7/15.
<result>C</result>
In a tree, 2/5 of the birds are robins while the rest are bluejays. If 1/3 of the robins are female and 2/3 of the bluejays are female, what fraction of the birds in the tree are male?