You can put this solution on YOUR website! Show just the units, and look at the cancellations
the same way you would do cancellations if
you were multiplying a string of fractions.
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[ km / sec ] x [ ft / km ] x [ miles / ft ] x [ sec / min ] x [ min / hr ] x [ hrs / day ] x [ days / yr ]
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If you do the cancellations, your should end up with:
[ miles / yr ]
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Note that you have to supply numbers for each of the steps, like
[ sec / min ] =
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Also, you can group some of the steps if you know the right conversion, for instance:
[ ft / km ] x [ miles / ft ] = [ miles / km ]
Do you know this conversion? If so you can do 1 step instead of 2
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Hope this helps. The bigger lesson here is that the units should
work out in ANY problem you do, and it's a way of checking your work
