题目

英语翻译
A rainstorm increased the amount of water stored in State J reservoirs from 124 billion gallons to 138 billio gallons.If the storm increased the amount of water in the reservoirs to 82 percent of total capacity,approximately how many billion gallons of water were the reservoirs short of total capacity prior to the storm?
我只要是不明白short of 应该不是问几分之几~因为选择的答案都是整数~没有分数~

提问时间：2021-01-02

答案

水库在大雨前距整个水库满差多少加仑的水?（没下雨之前要多少加仑的水,水库才会满?）
138除以0.82等于168.3
168.3减124等于44.3 billion gallons