A number is doubled and 9 is added. If the resultant is trebled, it becomes 75. What is that number ?  Choose the correct choice from the following answers:
A) 2	B) 4	C) 5	D) 8	E) 9
Explanation:   Let the number be v. Then, 3 (2x + 9) = 75.   2x + 9 = 25   =&gt; 2x = 16   =&gt; x = 8   Answer: 8) 8
<result>D</result>
A number is doubled and 9 is added. If the resultant is trebled, it becomes 75. What is that number ?