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January 30, 2015

January 30, 2015

Posted by **Anonymous** on Tuesday, November 6, 2012 at 3:26am.

- High school -
**Tarefa**, Tuesday, November 6, 2012 at 6:35amMaths

- Math -
**Reiny**, Tuesday, November 6, 2012 at 8:12amuse a simple ratio

let the number of revolutions in 1 km be n

n/1000 = 20/42

x = 1000(20/42) = 10000/21 or appr 476.2 revolutions

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