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Source: OG11th

Level: 3

In a small snack shop, the average (arithmetic mean) revenue was $400 per day over a 10-day period. During this period, if the average daily revenue was $360 for the first 6 days, what was the average daily revenue for the last 4 days?

  • A 420
  • B 440
  • C 450
  • D 460
  • E 480

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