Physics - Kinematics Question with Solution | TestHub

A boy standing at a corner noticed a thief on bike moving with $54\mathrm{km}/\mathrm{hr}$ and after some time a police jeep crosses him with speed $72\mathrm{km}/\mathrm{hr}$. If jeep catches the thief at a distance of 1 km from the boy then the time gap between bike \& jeep will be when they cross the boy-