easy · GMAT Quant

A retail business purchases inventory from two separate suppliers. Supplier A provides 200 units at an average cost of $15 per unit. Supplier B provides 300 units at an average cost of $25 per unit.

What is the average cost per unit across all 500 units purchased?

  1. $20
  2. $21
  3. $22
  4. $23
  5. $25

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