in traveling from a dormitory to a certain city, a student went 1 / 3 of the way by foot, 1 / 4 of the way by bus, and the remaining 5 kilometers by car. what is the distance, in kilometers, from the dormitory to the city?	Choose the correct choice:
A) 13	B) 17	C) 42	D) 15	E) 12
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">(1/3) + (1/4)</gadget>
<output>7/12 = around 0.583333</output>

<gadget id="calculator">1 - (7/12)</gadget>
<output>5/12 = around 0.416667</output>

<gadget id="calculator">1 / (5/12)</gadget>
<output>12/5 = around 2.4</output>

<gadget id="calculator">5 * (12/5)</gadget>
<output>12</output>

<result>E</result>
in traveling from a dormitory to a certain city, a student went 1 / 3 of the way by foot, 1 / 4 of the way by bus, and the remaining 5 kilometers by car. what is the distance, in kilometers, from the dormitory to the city?
multiply(5, inverse(subtract(1, add(divide(1, 3), divide(1, 4)))))
"whole trip = distance by foot + distance by bus + distance by car x = 1 / 2 x + 3 / 5 x + 5 x - 1 / 2 x - 3 / 5 x = 5 x = 12 km option : e"