A train moves fast a telegraph post and a bridge 264 m long in 8 sec and 30 sec respectively. What is the speed of the train?	Choose the correct choice:
A) 89
B) 23
C) 56
D) 43.2
E) 67
Let the length of the train be x m and its speed be y m/sec.   Then, x/y = 8 =&gt; x = 8y   (x + 264)/30 = y   y = 12   Speed = 12 m/sec = 12 * 18/5= 
<gadget id="calculator">12 * 18/5</gadget>
<output>216/5 = around 43.2</output>
43.2 km/hr.   Answer: Option 43.2
<result>D</result>
A train moves fast a telegraph post and a bridge 264 m long in 8 sec and 30 sec respectively. What is the speed of the train?