In traveling from a dormitory to a certain city, a student went 1/5 of the way by foot, 2/3 of the way by bus, and the remaining 10 kilometers by car. What is the distance, in kilometers, from the dormitory to the city?
Choose the correct choice:  A) 30  B) 45  C) 60  D) 75  E) 120
Whole trip = distance by foot + distance by bus + distance by car   x = 1/5x + 2/3x + 10   x - 13/15x = 10   2/15x = 10=&gt; so x = (15/2)*10= 
<gadget id="calculator">(15/2)*10</gadget>
<output>75</output>
75Km   Answer 75
<result>D</result>
In traveling from a dormitory to a certain city, a student went 1/5 of the way by foot, 2/3 of the way by bus, and the remaining 10 kilometers by car. What is the distance, in kilometers, from the dormitory to the city?