Posted by **marc** on Thursday, March 24, 2011 at 6:52pm.

At noon, ship A starts sailing due east at the rate of 20km/hr. Ath the time, ship B, which is located 100km east of ship A initially, starts sailing on a course 60 degrees north of west at the rate of 10km/hr. How fast is the distance between the two ships changing one hour after they start sailing?

- calculus -
**Anonymous**, Friday, March 25, 2011 at 12:58am
si marc martinquilla ni?

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