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。
请问一下,by
the same fraction是什么意思?谢谢! |