The speed of a boat in still water is 60kmph and the speed of the current is 40kmph. Find the speed downstream and upstream?
Answers:	A) 87 kmph	B) 40 kmph	C) 16 kmph	D) 20 kmph	E) 18 kmph kmph
Speed downstream = 60 + 40= 
<gadget id="calculator">60 + 40</gadget>
<output>100</output>
100 kmph   Speed upstream= 60 - 40= 
<gadget id="calculator">60 - 40</gadget>
<output>20</output>
20 kmph   Answer:20 kmph
<result>D</result>
The speed of a boat in still water is 60kmph and the speed of the current is 40kmph. Find the speed downstream and upstream?