7. There are 4 persons P, Q, R and S. The sum of the present ages of Q and R is 78 years. _____years ago, the ratio of the ages of P and R was 1 : 2. The present age of S is 4 years more than that of P. The ratio of present ages of P and R is 2 : 3 respectively. ______years hence the ratio of Q and S will be 11 : 10. The present age of S is 10 years less than that of R.
a) 8, 10
b) 14, 4
c) 14, 8
d) 7, 4
e) 16, 8