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Math·Problem-Solving and Data Analysis·Percentages
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A scientist studying the life cycle of butterflies counted the number of butterflies in a certain habitat each day for 46 days. On June 15, there were 168 butterflies in the habitat. The percent increase in the number of butterflies in the habitat from May 1 to June 15 was . How many butterflies were in the habitat on May 1?
A
128
B
116
C
53
D
5