If 9 gallons of gasoline are added to a tank that is already filled to 3/4 of its capacity, the tank is then filled to 9/10 of its capacity. How many gallons does the tank hold?
Select the correct option:
A) 20
B) 24
C) 36
D) 40
E) 54
Let the Capacity of the tank=C   (3/4)C + 9 = (9/10)C   =&gt;(9/10)C - (3/4)C = 9   =&gt;(3/20)C = 9   =&gt;C = (9*20)/3= 
<gadget id="calculator">(9*20)/3</gadget>
<output>60</output>
60   Number of gallons of gasoline that the tank currently holds= 3/4*C +9 = 45+9= 
<gadget id="calculator">45+9</gadget>
<output>54</output>
54   Answer 54
<result>E</result>
If 9 gallons of gasoline are added to a tank that is already filled to 3/4 of its capacity, the tank is then filled to 9/10 of its capacity. How many gallons does the tank hold?