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Zany banana 409 Posted 9 years ago
Grammar

Three times of the size or three times the size

Is the following sentence wrong?

X is three times of the size of Y.

Is it wrong to put an 'of' here? We usually say '50 percent of X' or 'one fifth of the size of X'. In these cases we put an 'of'. Please help .

  

Top answer

In an expression, X is often the unknown to be calculated. However, Y may represent a number or an object (such as a house). So you will mean “the size of Y”.

— Wilpeter

  • In an expression, X is often the unknown to be calculated.
  • However, Y may represent a number or an object (such as a house).
  • So you will mean “the size of Y”.
  • The expression might even require a second calculation that the size of Y is A times B.
  • Remember that ‘size’ is a measurement whereas ‘X’ might just be a quantity.
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2 Answers
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In an expression, X is often the unknown to be calculated. However, Y may represent a number or an object (such as a house). So you will mean “the size of Y”. The expression might even require a second calculation that the size of Y is A times B. Remember that ‘size’ is a measurement whereas ‘X’ might just be a quantity.

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This is the correct form.

X is three times the size of Y.
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