The ratio of the present age of P to the age of Q four years ago is 2 : 1 2 : 1 2 : 1 . The present age of R is equal to the average of the present ag...
Question
The ratio of the present age of P to the age of Q four years ago is . The present age of R is equal to the average of the present ages of P and Q. Sixteen years ago, R was 10 years old. What is the sum of the present ages of P, Q, and R (in years)?