A person travels equal distances with speeds of 3 km/hr, 4 km/hr and 5 km/hr and takes a total time of 40 minutes. The total distance is?	Choose the correct answer:
A) 1 km	B) 2 km	C) 3 km	D) 4 km	E) 2.55 km
E   3 km   Let the total distance be 3x km.   Then, x/3 + x/4 + x/5 = 40/60   47x/60 = 40/60 =&gt; x = 0.85.   Total distance = 3 * 0.85= 
<gadget id="calculator">3 * 0.85</gadget>
<output>2.55</output>
2.55 km.
<result>E</result>
A person travels equal distances with speeds of 3 km/hr, 4 km/hr and 5 km/hr and takes a total time of 40 minutes. The total distance is?