ShmoopTube

00:02

For a good time solve this shmoopy question...

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A circular wheel rotates 480 degrees in two minutes.

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How long would it take for this wheel to make 2 complete rotations?

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And here are the potential answers...

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Well it's a plain vanilla ratio question really...

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Something is to something as something else is to something else.

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Key things to note: 1 full rotation is 360 degrees...

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...so two rotations is 720 degrees...

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...480 degrees is 2 minutes or...

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...120 seconds as 720 degrees is to what?

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So in this case we can just cross multiply here

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and we take 480 time x equal 720 times 120.

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So the base equation is 480X equals 86400.

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Now divide both sides by 480 and get X equals 180 seconds.

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That's x equals 180 divided by 60 seconds which is

01:03

3 minutes. Looks like C is our answer.

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