A number is doubled and 5 is added. If the resultant is trebled, it becomes 129. What is that number?  Choose the correct answer:
A) 12 B) 29 C) 27 D) 19 E) 99
Explanation:   Let the number be x.   Therefore,   3(2x + 5) = 129   6x + 15 = 129   6x =114   x = 19   ANSWER:19
<result>D</result>
A number is doubled and 5 is added. If the resultant is trebled, it becomes 129. What is that number?