An escalator moves towards the top level at the rate of 12 ft.sec and its length is 196 feet. If a person walks on the moving escalator at the rate of 2 feet per second towards the top level, how much time does he take to cover the entire length.  Choose the correct option:
A) 14 sec B) 10 sec C) 12 sec D) 8 sec E) 9 sec
Time taken to cover the entire length = tot.dist/resultant speed   = 196/ (12+2)= 
<gadget id="calculator">196/ (12+2)</gadget>
<output>14</output>
14sec   14 secNSWER:14 sec
<result>A</result>
An escalator moves towards the top level at the rate of 12 ft.sec and its length is 196 feet. If a person walks on the moving escalator at the rate of 2 feet per second towards the top level, how much time does he take to cover the entire length.