Hannah baked some chocolate, strawberry and vanilla cupcakes. She baked four times as many chocolate as strawberry cupcakes. She baked three times as many chocolate as vanilla cupcakes. Altogether Hannah made 152 cupcakes. How many cupcakes of each favour did Hannah make

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