A person travels equal distances with speeds of 3 km/hr, 4 km/hr and 5 km/hr and takes a total time of 54 minutes. The total distance is? Choose the correct choice.
A) 1 km  B) 2 km  C) 3 km  D) 3.4 km  E) 5 km
D   3 km   Let the total distance be 3x km.   Then, x/3 + x/4 + x/5 = 54/60   47x/60 = 54/60 =&gt; x = 1.14   Total distance = 3 * 1.14 = 3.4 km.
<result>D</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 54 minutes. The total distance is?