Venn Diagram

In a survey made regarding the number of students enrolled in Math subjects. It was found out that 30 enrolled in Algebra , Calculus , and Trigonometry , 40 in Trigonometry and Calculus, 50 in algebra and Calculus, 80 in Algebra, 70 in Calculus. If there were 130 students in all, How many students were enrolled in Algebra only ____ Trigonometry only ____ And Calculus only _____