Of 40 students, 25 study French, 18 study Spanish and 5 study neither. How many study both languages?
Answer and explanation
Correct answer: B. 8 students
- Step 1: Students studying at least one language: . Step 2. Overlap . Answer: 8. Why not the others: Adding 25 and 18 counts the overlap twice, so the excess over 35 is the overlap.
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