Q18 Jan writes down
one multiple of 9
and two different factors of 40
Jan adds together her three numbers.
Her answer is greater than 20 but less than 30
Find three numbers that Jan could have written down

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