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## Homework Statement

A boat leaves a dock at 2:00 pm and travels due south at a speed of 20 km/h. Another

boat has been heading due east at 15 km/h and reaches the same dock at 3:00 pm. At

what time were the two boats closest together?

**3. The Attempt at a Solution [/b**

We actually don't need to use integrals for this(and we haven't really learned how), but I want to.

So a couple of quick questions...

first, integrating 20 equals 20t+c correct?

and second, either the 15km/h or the 20km/h should be negative, and it doesn't matter which one, right?

If those two things are true, I should be all set, if not, I might have more questions. :p

Thanks a lot for the help guys.

We actually don't need to use integrals for this(and we haven't really learned how), but I want to.

So a couple of quick questions...

first, integrating 20 equals 20t+c correct?

and second, either the 15km/h or the 20km/h should be negative, and it doesn't matter which one, right?

If those two things are true, I should be all set, if not, I might have more questions. :p

Thanks a lot for the help guys.