# Math

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A bicycle travels 42 meters for every 20 revolutions of the wheel. How many revolutions would the wheel make in a kilometer?

• High school -

Maths

• Math -

use 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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