The distance between place A and B is 999 km. An express train leaves place A at 6 am and runs at a speed of 55.5 km/hr. The train stops on the way for 1 hour 20 minutes. It reaches B at :

Answer: Option A

Time will be taken by train if it does not stop :
$$\begin{array}{rl}& =\frac{\text{Distance }}{\text{Speed}}\\ & =\frac{999\text{ kms}}{55.5\text{ km/hr}}\end{array}$$
Without stop = 18 hr
But if stops on the way for 1 hour 20 minutes before reaching B.
Total time :
= 18 hr + 1 hr 20 min
= 19 hour 20 minutes
Reaching time at B :
= 6 am + 19 hr 20 min
= 1.20 am