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21. The table below shows the price of different quantities
of standard-sized lemons at Joe’s Fruit Stand. What is
the least amount of money needed to purchase exactly
20 standard-sized lemons if the bags must be sold
intact and there is no tax charged for lemons?

  • A. $3.60

  • B. $3.90

  • C. $4.20

  • D. $4.50

  • E. $6.00