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Mathematics

The fraction which is not equal to 45\dfrac{4}{5} is

  1. 4050\dfrac{40}{50}

  2. 915\dfrac{9}{15}

  3. 1215\dfrac{12}{15}

  4. 3240\dfrac{32}{40}

Fractions

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Answer

Check each option using cross multiplication with 45\dfrac{4}{5}:

  1. 4 × 50 = 200 and 5 × 40 = 200. Equal, so equivalent.

  2. 4 × 15 = 60 and 5 × 9 = 45. Not equal, so not equivalent.

  3. 4 × 15 = 60 and 5 × 12 = 60. Equal, so equivalent.

  4. 4 × 40 = 160 and 5 × 32 = 160. Equal, so equivalent.

Hence, option 2 is the correct option.

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