a man can row 5 kmph in still water. when the river is running at 2 kmph, it takes him 1 hour to row to a place and black. what is the total distance traveled by the man? Pick:	A) 5.75	B) 5.7	C) 5.76	D) 4.2	E) 5.71
<gadget id="calculator">5 + 2</gadget>
<output>7</output>

<gadget id="calculator">5 - 2</gadget>
<output>3</output>

<gadget id="calculator">7 * 3</gadget>
<output>21</output>

<gadget id="calculator">7 + 3</gadget>
<output>10</output>

<gadget id="calculator">21 / 10</gadget>
<output>21/10 = around 2.1</output>

<gadget id="calculator">(21/10) * 2</gadget>
<output>21/5 = around 4.2</output>

<result>D</result>
a man can row 5 kmph in still water. when the river is running at 2 kmph, it takes him 1 hour to row to a place and black. what is the total distance traveled by the man?
multiply(divide(multiply(add(5, 2), subtract(5, 2)), add(add(5, 2), subtract(5, 2))), const_2)
"m = 5 s = 2 ds = 7 us = 3 x / 7 + x / 3 = 1 x = 2.1 d = 2.1 * 2 = 4.2 answer : d"