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8th grade

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Suppose that the veterans of the Korean War and the veterans of WWII are mutually exclusive. Together, the veterans of the Korean War and the veterans of WWII, account for X% of the veterans in the United States in 2009. The number of veterans of the Vietnam era is X% + 11.6% in 2009. What is the number of Vietnam era veterans in the United States in 2009? Express your answer to the nearest whole number.

  • 8th grade - ,

    We are told that together, the number of Korean War and WWII veterans in 2009 is X%. Using the information from the previous problem we have X% = 12.4% + 10.7% = 23.1%. That means the number of Vietnam era veterans is 23.1% + 11.6% = 34.7% of the veterans in the United States in 2009. Thus, there were 21,854,374(0.347) = 7,583,467.778 ≈ 7,583,468 veterans of the Vietnam era in the United States in 2009.

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