SSC JE Civil Engineering 2017 Set 3 Solved Paper

A begin to move from Point P. A goes toward 9m, Q then from Q to 7m, R. B begin to move from point O. B goes toward 3m, S then from S to 9m T, then from T to 5m U.
⇒ UR = QT – TB – UQ
= AS – TB – UQ (QT = AS)
= 9 – 2 – 4 = 3 m.
Hence, B is 3m. to the east of A.