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medium · GMAT Quantitative Reasoning

In a logistics company, 60% of shipments go by sea, 50% by air, and 40% by land. 30% use both sea and air, 20% use both sea and land, and 15% use both air and land; 10% use all three modes.

What percentage of shipments use none of these three modes?

  1. 5%
  2. 15%
  3. 0%
  4. 10%
  5. 25%

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