Speed of a boat in standing water is 16 kmph and the speed of the stream is 2 kmph. A man rows to a place at a distance of 7740 km and comes back to the starting point. The total time taken by him is:	Choose the correct choice from the following answers:
A) 914.2 hours  B) 900 hours  C) 915 hours  D) 982.9 hours  E) 915 hours
Explanation:   Speed downstream = (16 + 2)= 
<gadget id="calculator">(16 + 2)</gadget>
<output>18</output>
18 kmph   Speed upstream= (16 - 2)= 
<gadget id="calculator">(16 - 2)</gadget>
<output>14</output>
14 kmph   Total time taken= 7740/18 + 7740/14 = 430 + 552.9= 
<gadget id="calculator">430 + 552.9</gadget>
<output>982.9</output>
982.9 hours   Answer: Option 982.9 hours
<result>D</result>
Speed of a boat in standing water is 16 kmph and the speed of the stream is 2 kmph. A man rows to a place at a distance of 7740 km and comes back to the starting point. The total time taken by him is: