At bay high school 60% of all students have a car and an ipod and 70% of all students have a car. what is the probability that a student with a car also has an ipod?

Gravel is being dumped from a conveyor belt at a rate of 25 ft3/min, and its coarseness is such that it forms a pile in the shape of a cone whose base diameter and height are always equal. how fast is the height of the pile increasing when the pile is 14 ft high? (round your answer to two decimal places.) ft/min