The speed of a boat in still water is 60kmph and the speed of the current is 30kmph. Find the speed downstream and upstream?	Choose the correct choice from the following:
A) 40, 68 kmph
B) 40, 30 kmph
C) 90, 60 kmph
D) 40, 60 kmph
E) 90, 30 kmph
Speed downstream = 60 + 30= 
<gadget id="calculator">60 + 30</gadget>
<output>90</output>
90 kmph   Speed upstream= 60 - 30= 
<gadget id="calculator">60 - 30</gadget>
<output>30</output>
30 kmph   Answer: 90, 30 kmph
<result>E</result>
The speed of a boat in still water is 60kmph and the speed of the current is 30kmph. Find the speed downstream and upstream?