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A merchant surveyed 270 people to determine the way they learned about an upcoming sale. The survey showed that 100 learned about the sale from the radio, 170 from television, 120 from radio and newspapers, 60 from television and newspapers, and 10 from all three sources. How many people learned of the sale from newspapers or radio, but not both? people learned of the sale from newspapers or radio, but not both CITTE
ut an upcoming sale. The survey showed that 100 learned about the sale from the radio, 170 from television, 120 from the newspaper, 50 from radio and television, 40 m all three sources. How many people learned of the sale from newspapers or radio, but not both? e