CSEC Mathematics · May/June 2016 · Paper 2 · Question 3(a)(iii)
A Venn diagram shows the number of students studying History (H) and French (F) in a class of 30 students. The diagram shows 18-x students in H only, x students in H and F, 14-x students in F only, and 5 students outside both sets. U represents the set of all students.
Determine the number of students who study BOTH History and French.
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