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12 November, 08:57

A store has sold 90 notebooks, which is 20% of all the notebooks they had. How many notebooks did the store

have at first?

A) 450

B) 23

C) 108

D) 500

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Answers (1)
  1. 12 November, 12:32
    0
    Answer: 450

    Explanation: 20%=20/100=1/5

    Multiply 90 by the reciprocal of 1/5 which is 5

    90 x 5 = 450
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