A man rows his boat 120 km downstream and 60 km upstream, taking 2 hours each time. Find the speed of the stream?	Choose one
A) 6 B) 15 C) 17 D) 18 E) 2
Speed downstream = d/t = 120/(2 )= 
<gadget id="calculator">120/(2 )</gadget>
<output>60</output>
60 kmph   Speed upstream= d/t = 60/(2)= 
<gadget id="calculator">60/(2)</gadget>
<output>30</output>
30 kmph   The speed of the stream= (60 - 30)/2= 
<gadget id="calculator">(60 - 30)/2</gadget>
<output>15</output>
15 kmph   Answer:15
<result>B</result>
A man rows his boat 120 km downstream and 60 km upstream, taking 2 hours each time. Find the speed of the stream?