Two goods trains each 500 m long are running in opposite directions on parallel tracks. Their speeds are 60 km/hr and 30 km/hr respectively. Find the time taken by the slower train to pass the driver of the faster one? Select
A) 12 sec
B) 24 sec
C) 40 sec
D) 60 sec
E) 62 sec
Relative speed = 60 + 30= 
<gadget id="calculator">60 + 30</gadget>
<output>90</output>
90 km/hr.   90 * 5/18= 
<gadget id="calculator">90 * 5/18</gadget>
<output>25</output>
25 m/sec.   Distance covered= 500 + 500= 
<gadget id="calculator">500 + 500</gadget>
<output>1_000</output>
1000 m.   Required time= 1000 /25= 
<gadget id="calculator">1000 /25</gadget>
<output>40</output>
40 sec.   ANSWER:40 sec
<result>C</result>
Two goods trains each 500 m long are running in opposite directions on parallel tracks. Their speeds are 60 km/hr and 30 km/hr respectively. Find the time taken by the slower train to pass the driver of the faster one?