A number is doubled and 9 is added. If resultant is trebled, it becomes 81. What is that number Answers
A) 9  B) 10  C) 12  D) 14  E) 15
Explanation:   =&gt; 3(2x+9) = 81   =&gt; 2x+9 = 27   =&gt; x = 9   9nswer: Option 9
<result>A</result>
A number is doubled and 9 is added. If resultant is trebled, it becomes 81. What is that number