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Chris entered a number in his calculator and erroneously

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Chris entered a number in his calculator and erroneously [#permalink] New post 22 Feb 2018, 13:48
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83% (00:29) correct 16% (00:58) wrong based on 12 sessions
Chris entered a number in his calculator and erroneously multiplied the number by 2,073 instead of 2.073, getting an incorrect product. Which of the following is a single operation that Chris could perform on his calculator to correct the error?

Indicate \(all\) such operations.


A Multiply the incorrect product by 0.001

B Divide the incorrect product by 0.001

C Multiply the incorrect product by 1,000

D Divide the incorrect product by 1,000
[Reveal] Spoiler: OA

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Re: Chris entered a number in his calculator and erroneously [#permalink] New post 22 Feb 2018, 14:44
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Explanation

This is actually a mirror question, I could say.

If you multiply a number x * 2,703 instead of 2.703, to re-establish the right situation in the

  • first case x * 2,703 you have to multiply the same number for one thousand but in the mirror, which means divide the same number for 0.001 which is choice A.
  • On the other hand: scanning the answer choices the same process should be performed on the contrary. Multiply the number for the mirror of 0.001 which is 1,000. D is the other option.

The answer are A and D.
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Re: Chris entered a number in his calculator and erroneously [#permalink] New post 11 Apr 2018, 21:39
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A and D will do the same operation to the equation which is correct.

Dividing with 0.001 is confusing but that will do opposite of what is required for correction.

Hence the answer options.
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Re: Chris entered a number in his calculator and erroneously [#permalink] New post 11 Apr 2018, 23:34
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when X is multiplied by 2073 instead of 2.073 then the required result will be obtained when the erroneous operation is either multiplied by 0.001 or divided by 1000.
Re: Chris entered a number in his calculator and erroneously   [#permalink] 11 Apr 2018, 23:34
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Chris entered a number in his calculator and erroneously

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