agallegos0905 agallegos0905

28-10-2015
Mathematics

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What is the missing number in the sentence below? 3 × 4 × 5 = _____ × 20

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Panoyin Panoyin

28-10-2015

3 × 4 × 5 = 20 · x
    12 × 5 = 20x
      60 = 20x
      20    20
      3 = x

The missing number in a sentence is 3.

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Аноним Аноним

28-10-2015

3 x 4 = 12
12 x 5 = 60
60 / 20 = 3

answer is 3

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