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12 February, 16:56

Maria is planning a party. Nancy, her friend, suggests that she should order 3 pizzas for every 7 people. If she is expecting 21 people at the party, how many pizzas should she order?

A. 42

B. 9

C. 49

D. 21

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Answers (2)
  1. 12 February, 17:12
    0
    21:7=3

    This means that she has to buy those 3 pizzas 3 times, so ...

    3*3=9

    And the answer is 9
  2. 12 February, 17:20
    0
    B. 9

    Because 3 x 7 = 21
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