A group of 100 people touring Europe includes 38 people who speak spanish, 58 who speak portuguese, and 17 who speak neither language. How many people in the group speak both Spanish and Portuguese?

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
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A group of 100 people touring Europe includes 38 people who speak spanish, 58 who speak portuguese, and 17 who speak neither language. How many people in the group speak both Spanish and Portuguese?
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