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# By what percent did the number of vehicles stolen decrease f

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By what percent did the number of vehicles stolen decrease f [#permalink]  22 May 2017, 01:02
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By what percent did the number of vehicles stolen decrease from 1997 to 1998?

A) 7.4%

B) 8.0%

C) 8.4%

D) 12.0%

E) 19.4%
[Reveal] Spoiler: OA

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Re: By what percent did the number of vehicles stolen decrease f [#permalink]  26 Sep 2017, 08:25
Assuming that in the base year 1994 cars stolen were 100, the number of stolen cars in 1997 and 1998 are respectively 88 and 80.6. Then, the percent decrease is computed as
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