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On a scale that measures the intensity of a certain

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Intern
Joined: 23 May 2008
Posts: 47
On a scale that measures the intensity of a certain [#permalink]

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15 Sep 2008, 16:02
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On a scale that measures the intensity of a certain phenomenon, a reading of n+1 corresponds to an intensity that is 10 times the intensity corresponding to a reading of n. On that scale, the intensity corresponding to a reading of 8 is how many times as great as the intensity corresponding to a reading of 3?

Director
Joined: 23 Sep 2007
Posts: 767
Re: Rational Numbers [#permalink]

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15 Sep 2008, 18:07
snowbirdskier wrote:
On a scale that measures the intensity of a certain phenomenon, a reading of n+1 corresponds to an intensity that is 10 times the intensity corresponding to a reading of n. On that scale, the intensity corresponding to a reading of 8 is how many times as great as the intensity corresponding to a reading of 3?

3 = n
4 = 10n
5 = 10(4) = 100n
6 = 10(5) = 1000n
7 = 10000n
8 = 100000n
Intern
Joined: 25 Mar 2006
Posts: 9
Location: Kolkata, India
Re: Rational Numbers [#permalink]

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16 Sep 2008, 05:32
Intensity I8 = 10*I7 = 10*10*I6 = 10*10*10*I5 = 10*10*10*10*I4 = 10*10*10*10*10*I3

=> I8 = 100,000 I3.
Intern
Joined: 23 May 2008
Posts: 47
Re: Rational Numbers [#permalink]

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17 Sep 2008, 09:52
That is correct (10^5). Can you please explain why you're doing what you are doing?
Re: Rational Numbers   [#permalink] 17 Sep 2008, 09:52
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On a scale that measures the intensity of a certain

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