After a storm deposits 110 billion gallons of water into the city reservoir, the reservoir is 60% full. If the original contents of the reservoir totaled 220 billion gallons, the reservoir was approximately what percentage full before the storm? Choose the correct choice from the following options
A) 40%
B) 48%
C) 54%
D) 58%
E) 65%
When the storm deposited 110 billion gallons, volume of water in the reservoir = 220 + 110 = 360 billion gallons   If this is only 60% of the capacity of the reservoir, the total capacity of the reservoir = 330/0.6= 
<gadget id="calculator">330/0.6</gadget>
<output>550</output>
550 billion gallons   Therefore percentage of reservoir that was full before the storm= (220/550)*100= 
<gadget id="calculator">(220/550)*100</gadget>
<output>40</output>
40%   Option 40%
<result>A</result>
After a storm deposits 110 billion gallons of water into the city reservoir, the reservoir is 60% full. If the original contents of the reservoir totaled 220 billion gallons, the reservoir was approximately what percentage full before the storm?