A balloon is 200 ft. off the ground and rising vertically at the constant rate of 15 ft/sec. An automobile passes beneath it traveling along a straight road at the constant rate of 45 mph or 66 ft/sec. How fast is the distance between them changing 1 sec. later?(adsbygoogle = window.adsbygoogle || []).push({});

i know how to do related rates problems...i just don't know where to start with this one...please help!!!!!

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# Related Rates Help

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