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the U.S postal service handles 170,000,000,000 pieces of mail each year. this is 40% of the worlds total. how many pieces of mail are sent each year

Respuesta :

JulieC246
  40      170,000,000,000
  ----- = --------------------------
  100                x

Multiply diagonally to solve
So you get 40x = 17,000,000,000,000
Then divide each side by 40 to get x alone
So the answer is 42,500,000,000,000

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