选择题
2006 AMC 8 Problem 3: Lap Time Improvement
Elisa swims laps in the pool. When she first started, she completed 10 laps in 25 minutes. Now, she can finish 12 laps in 24 minutes. By how many minutes has she improved her lap time?
A.
1/2
B.
3/4
C.
1
D.
2
E.
3