Q23:
AMOUNT OF BACTERIA PRESENT
|
Time>> |
Amount>> |
|
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 in the table 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.?
A. 12.0
B. 12.1
C. 12.2
D. 12.3
E. 12.4
答案是A, 可是我认为是C. 请哪位高人指点一下. 谢谢 | 
