in one hour, a boat goes 8 km along the stream and 2 km against the stream. the sped of the boat in still water ( in km / hr ) is:
Choices.
A) 3	B) 5	C) 8	D) 9	E) 10
<gadget id="calculator">8 + 2</gadget>
<output>10</output>

<gadget id="calculator">10 / 2</gadget>
<output>5</output>

<result>B</result>
in one hour, a boat goes 8 km along the stream and 2 km against the stream. the sped of the boat in still water ( in km / hr ) is:
divide(add(8, 2), const_2)
"solution speed in still water = 1 / 2 ( 8 + 2 ) km / hr = 5 kmph . answer b"