Consider two inertial frames S and S' with spacetime coordinates x,y,z,t and x'y',z',t' respec- tively. Frame S' moves along the x-axis with speed v relative to S frame. The origins coincide at t = t'=0. An event occurs in S at x = 9108 m and in S' at x'=3108 m, t' = ls. The value of v is x108 m/s. (Upto one decimal place).