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A Scale and Intensity

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by apoorva.srivastva » Sat Nov 21, 2009 11:45 am
A scale is desinged such that an increase of 10 on the scale represents a multiplication by 10 of the corresponding intensity.The intensity corresponding to a measurement of 73 on this scale is how many times the intensity corresponding to a measurement of 43?

A. 30
B. 100
C. 300
D. 1,000
E. 10,000


Please help me to set up an algebraic equation and then solve!!
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by palvarez » Sat Nov 21, 2009 11:54 am
(a, b)
(a+10, 10b)
(a+10n, b*10^n)

(43, b)
(43+10(3), b*10^3)

Answer = 10^3
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by Abdulla » Sat Nov 21, 2009 3:48 pm
palvarez wrote:(a, b)
(a+10, 10b)
(a+10n, b*10^n)

(43, b)
(43+10(3), b*10^3)

Answer = 10^3[/quote

palvarez, I've noticed from your posts that you can solve every single problem with the shortest steps I've ever seen in my life, but can you please write down beside each step how did you got it, so we can follow.

Thanks
Abdulla
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