A person travels equal distances with speeds of 3 km/hr, 4 km/hr and 5 km/hr and takes a total time of 45 minutes. The total distance is?
Choose the correct choice from the following choices
A) 1 km  B) 2.87 km  C) 3 km  D) 4 km  E) 5 km
B   3 km   Let the total distance be 3x km.   Then, x/3 + x/4 + x/5 = 45/60   47x/60 = 45/60 =&gt; x = 0.95.   Total distance = 3 * 0.95 = 2.87 km.
<result>B</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 45 minutes. The total distance is?