A person travels equal distances with speeds of 9 km/hr, 10km/hr and 11 km/hr and takes a total time of 47 minutes. The total distance is?	Choose the correct choice from the following answers
A) 6 km	B) 3 km	C) 8 km	D) 9 km	E) 2 km
Let the total distance be 3x km.   Then, x/9 + x/10 + x/11 = 47/60   29x/96 = 47/60 =&gt; x = 2.59   Total distance = 3 *2.59 = 7.78 km.   Answer:8 km
<result>C</result>
A person travels equal distances with speeds of 9 km/hr, 10km/hr and 11 km/hr and takes a total time of 47 minutes. The total distance is?