SSC MTS 5 Aug 2019 Shift 1 Paper

Distance between P and Q = 15 km
Distance covered by Alok = PR
Distance covered by Raman = PQ + RQ
Total distance covered by both Raman and Alok = PR + PQ + RQ = PQ + PQ = 2PQ = 2 × 15 = 30 km
From the figure.
PR + RQ = PQ
Speed of Raman and Alok is 9 km/hr and 6 km/hr respectively.
As we know,
Time = Distance/Speed
Time = 30/(9 + 6)
Time = 30/15
Time = 2 hr
Distance covered by Alok in 2 hr = 6 × 2 = 12 km
So, the distance between P and R is = 12 km