What number is that, which is to 12 increased by three times the number, as 2 to 9 ?  Choices
A) 6  B) 7  C) 8  D) 9  E) 10
Let x = the number sought.   Then x/12 + x + 12 = 64.   6nd x - 624/13 = 48.
<result>A</result>
What number is that, which is to 12 increased by three times the number, as 2 to 9 ?