• question_answer Two goods trains each 500 m long are running in opposite directions on paralleled tracks. Their speeds are 45 km/hr and 30 km/hr respectively. The time taken by the slower train to pass the driver of the faster train is A)  24 sec  B)  48 sec C)  60 sec  D)  12 sec

[b] $t=\frac{500+500}{\left( 45+30 \right)\times \frac{5}{18}}$ $=\frac{1000\times 18}{75\times 5}=48\,\sec$