medium · GMAT Quant

A commercial truck fleet logs mileage m in kilometers. Service Alert A triggers when m equiv 5 pmod20, and Service Alert B triggers when m equiv 15 pmod30.

What is the smallest positive mileage m where both service alerts trigger simultaneously?

  1. 45
  2. 105
  3. 600
  4. 15
  5. 25

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