A train 160 m long passed a pole in 40 sec. How long will it take to pass a platform 320 m long?
Choose the correct choice
A) 12  B) 14  C) 16  D) 18  E) 20
Speed = 160/40 = 40 m/sec.   Required time = (160 + 320)/40= 
<gadget id="calculator">(160 + 320)/40</gadget>
<output>12</output>
12 sec.   12nswer:12
<result>A</result>
A train 160 m long passed a pole in 40 sec. How long will it take to pass a platform 320 m long?