At the end of the month, a certain ocean desalination plant’s reservoir contained 14 million gallons of water. This amount is twice the normal level. If this amount represents 70% of the reservoir’s total capacity, how many million gallons short of total capacity is the normal level? Choose the correct choice from the following choices:
A) 2  B) 5  C) 10  D) 12  E) 15
the Q talks of total capacity, normal level, present level, shortage etc..   so it is all about not going wrong in these terms   14 MG= 70% of Total..   total = 14/.7= 
<gadget id="calculator">14/.7</gadget>
<output>20</output>
20MG..   Normal level= 1/2 of 20=10MG..   shortage of normal level=20-10= 
<gadget id="calculator">20-10</gadget>
<output>10</output>
10MG..   10
<result>C</result>
At the end of the month, a certain ocean desalination plant’s reservoir contained 14 million gallons of water. This amount is twice the normal level. If this amount represents 70% of the reservoir’s total capacity, how many million gallons short of total capacity is the normal level?