A group of 100 people touring Europe includes 38 people who speak French​, 59 who speak Greek​, and 17 who speak neither language. How many people in the group speak both French and Greek​?

Question

A group of 100 people touring Europe includes 38 people who speak French​, 59 who speak Greek​, and 17 who speak neither language. How many people in the group speak both French and Greek​?

_____ people in the group speak both French and Greek

Answer 1

83 people speak Greek, French, or both. (100 - 17)

59 speak Greek, 38 speak French. That totals 97.

So 97 - 83 (14) speak both Greek and French.

Try this with Venn diagrams.