A balloon is rising at a constant speed of 5 ftys. A boy
Chapter , Problem 99(choose chapter or problem)
A balloon is rising at a constant speed of 5 ftys. A boy is cycling along a straight road at a speed of 15 ftys. When he passes under the balloon, it is 45 ft above him. How fast is the distance between the boy and the balloon increasing 3 s later?
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