The ratio of the present age of Sandy to that of Molly is 7:2. Sixteen years from now, the ratio of the ages of Sandy to Molly will be 5:2. What was Sandy's age 6 years ago?	Select: A) 66 B) 70 C) 74 D) 78 E) 82
Let the present age of Sandy be 7x years and that of Molly be 2x years.   (7x + 16) / (2x + 16) = 5 / 2   4x = 48   x = 12   Six years ago, Sandy's age was 7(12) - 6 = 78   The answer is 78.
<result>D</result>
The ratio of the present age of Sandy to that of Molly is 7:2. Sixteen years from now, the ratio of the ages of Sandy to Molly will be 5:2. What was Sandy's age 6 years ago?