If sushi rows 27 km upstream and 81 km down steam taking 9 hours each, then the speed of the stream	Choose the most appropriate option
A) 12 kmph  B) 13 kmph  C) 22 kmph  D) 20 kmph  E) 15 kmph
Speed upstream = 27/9= 
<gadget id="calculator">27/9</gadget>
<output>3</output>
3 kmph   Speed down stream= 81/3= 
<gadget id="calculator">81/3</gadget>
<output>27</output>
27 kmph   Speed of stream= ½ (27-3) = 12 kmph   12 kmphNSWER:12 kmph
<result>A</result>
If sushi rows 27 km upstream and 81 km down steam taking 9 hours each, then the speed of the stream