medium · GMAT Quant

A logistics enterprise monitors fuel consumption per trip across two regional fleets. Fleet 1 logged 12 trips with a fuel consumption variance of 25 square liters. Fleet 2 logged 38 trips with a fuel consumption variance of 50 square liters. Assuming both fleets share the same average fuel consumption per trip

What is the variance of fuel consumption across all 50 logged trips?

  1. 37.5
  2. 41.0
  3. 44.0
  4. 44.9
  5. 2,200.0

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