How long does a bus 100 m long traveling at 50 kmph takes to cross a bridge of 150 m in length?  Choose the correct choice from the following
A) 18	B) 16	C) 15	D) 11	E) 12
D = 100 + 150= 
<gadget id="calculator">100 + 150</gadget>
<output>250</output>
250 m   S= 50 * 5/18 = 125/9   T = 250 * 9/125= 
<gadget id="calculator">250 * 9/125</gadget>
<output>18</output>
18 sec   18nswer:18
<result>A</result>
How long does a bus 100 m long traveling at 50 kmph takes to cross a bridge of 150 m in length?