SSC Steno Grade C and D 23 Dec 2020 Shift 1 Paper

Question : 35 of 200

Marks: +1, -0

After 6 years, the sum of the years of service of P, Q and R will be 56 years. Before 3 years, the sum of years of service of Q and R was 17 years. What is the current length of service of P?