Posted by **eve** on Sunday, July 31, 2011 at 7:32am.

A car is heading east toward an intersection at the rate of 40 mph. A truck is heading south, away from the same intersection at the rate of 60 mph. At what rate is the distance between the car and the truck changing when the car is 8 miles from the intersection and the truck is 15 from the intersection?

- Math -
**Nathan**, Friday, March 27, 2015 at 8:54pm
ds/dt=580/17~34.12mph

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