Species a doubles every 3 hours and initially there are 6 grams. species b doubles every 4 hours and initially there are 11 grams. how long until the two species have the same mass?

20 sharpened pencils are placed in a box containing an unknown number of unsharpened pencils suppose 15 pencils are removed at random and five of the remove pencils are sharpened based on this is it reasonable to assume that the number of unsharpened pencil is 40 explain your reasoning