A rainstorm increased the amount of water stored in State J reservoirs from 124 billion gallons to 140 billion gallons. If the storm increased the amount of water in the reservoirs to 80 percent of total capacity, approximately how many billion gallons of water were the reservoirs short of total capacity prior to the storm? Choose the correct choice from the following answers
A) 51 B) 48 C) 55 D) 63 E) 65
Let total capacity be x   we know 140 = 0.80x   x = 140/0.80= 
<gadget id="calculator">140/0.80</gadget>
<output>175</output>
175   Prior to storm, we had 124 bn gallons     175-124= 
<gadget id="calculator">  175-124</gadget>
<output>51</output>
51   51nswer : 51
<result>A</result>
A rainstorm increased the amount of water stored in State J reservoirs from 124 billion gallons to 140 billion gallons. If the storm increased the amount of water in the reservoirs to 80 percent of total capacity, approximately how many billion gallons of water were the reservoirs short of total capacity prior to the storm?