A number is doubled and 9 is added. If resultant is trebled, it becomes 63. What is that number Choose the correct choice from the following:
A) 6 B) 10 C) 12 D) 14 E) 15
Explanation:   =&gt; 3(2x+9) = 63   =&gt; 2x+9 = 21   =&gt; x = 6   6nswer: Option 6
<result>A</result>
A number is doubled and 9 is added. If resultant is trebled, it becomes 63. What is that number