A number is doubled and 7 is added. If resultant is trebled, it becomes 99. What is that number  Pick:	A) 8	B) 10	C) 14	D) 13	E) 16
Explanation:   =&gt; 3(2x+7) = 99   =&gt; 2x+7 = 33   =&gt; x = 13   Option 13
<result>D</result>
A number is doubled and 7 is added. If resultant is trebled, it becomes 99. What is that number