#### The North American and European continents are moving apart at a rate of about 3 cm/y. At this rate how long will it take them to drift 500 km farther apart than they are at present?

**SOLUTION:**

We know that the formula for velocity is

If we rearrange the formula and solve for time, we come up with

Substituting the given values,

Therefore, the time it will take is about .

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