Discrete Math-Venn Diagram

Discrete Math-Venn Diagram?

In a group of students, each student is taking a mathematics course or a computer science course or both. One-fifth of those taking a mathematics course arealso taking a computer science course, and one-eighth of those taking a computer science course are also taking a mathematics course. Are more than one-third of thestudents taking a mathematics course? (From section on Venn diagrams)