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Posted by **Dj** on Wednesday, April 2, 2008 at 4:43pm.

Please help me i have tried so hard to figure it out but I can't get it.

- science -
**DrBob222**, Wednesday, April 2, 2008 at 5:12pmYou can do it long way by converting 778.3 km to miles and calculating the time but I think a shorter way is to set up a proportion between earth/sun and jupiter/sun

170yrs to drive 149.6 km.

? yrs to drive 778.3 km.

The ratio would look like this

(170yrs/149.6 million km) = (?yrs/778.3 million km)

Cross multiply.

170yrs x 778.3 million km = 149.6 million km x ?

Solve for ?.

? = 170 x 778.3 million km/149.6 million km.

Check my thinking. Check my work carefully. You can ignore the million factor since it is in the numerator and denominator and cancels.

- science -
**Dj**, Wednesday, April 2, 2008 at 5:47pmthank you for your help

- science -

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