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A road construction team used to build 2.4 kilometers of roads every day. Now it builds three signatures every day. How many percent has the work efficiency of this road construction team increased?
Detailed process:
Solution: Suppose work efficiency is increased by x%
From the question: 2.4X (1+x%) = 3
p>
2.4X x%=3-2.4
x%=0.25
x=25
Answer: Work efficiency increased by 25%< /p>
The answer of the second grade students is expected to be adopted