A number is doubled and 9 is added. If the resultant is trebled, it becomes 63. What is that number?	Choose the correct answer:
A) 3.5	B) 6	C) 8	D) 7	E) 4
Let the number be x. Then,   3(2x + 9) = 63   2x = 12 =&gt; x = 6   ANSWER:6
<result>B</result>
A number is doubled and 9 is added. If the resultant is trebled, it becomes 63. What is that number?