How many people learned of the sale from exactly

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A merchant surveyed 360 people to determine the way they learned about an upcoming sale. The survey showed that 190 learned about the sale from the radio, 150 from television, 190 from the newspaper, 80 from radio and television, 90 from radio and newspapers, 50 from television and newspapers, and 30 from all three sources. How many people learned of the sale from exactly one of the three media?

Reference no: EM13186268

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