ONE QUESTION, ONE STEP
ZX-E20B2DFD5EBluebook试题7 · 第 19 题
Bluebook试题7 · 原库模块 1 · Q19 原库参考解析
A scientist studying the life cycle of dragonflies counted the number of dragonflies in a certain habitat each day for 46 days. On February 15, there were 99 dragonflies in the habitat. The percent increase in the number of dragonflies in the habitat from January 1 to February 15 was 12.50%. How many dragonflies were in the habitat on January 1?
参考答案：
解题思路
容易忽略的一步
