Of the 80 workers on a Siliguri tea estate, the diagram shows who speak Nepali and who speak Bengali. How many workers speak neither language?

Question

Accepted Answer

9. Workers who speak at least one language = 31 + 18 + 22 = 71, so neither = 80 - 71 = 9. 27 forgets the 18 who speak both, 18 is the both-group, and 49 takes away only the Nepali-only part.

Of the 80 workers on a Siliguri tea estate, the diagram shows who speak Nepali and who speak Bengali. How many workers speak neither language?

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