1:00 P.M. 10.0 grams
4:00 P.M. x grams
7:00 P.M. 14.4 grams
Data for a certain biology experiment are given above. If the amount of bacteria present increased by the same fraction during each of the two 3-hour periods shown, how many grams of bacteria were present at 4:00 P.M.?
I would use process of elimination
(A) % increase formula beween 4pm & 1pm = (12-10)/10 = 1/5
% increase formula beween 7pm & 4pm = (14.4-12)/12 = 2.4/12 = 1/5