A person travels equal distances with speeds of 8 km/hr, 9 km/hr and 10 km/hr and takes a total time of 47 minutes. The total distance is?
Choose the correct choice.
A) 6 km B) 3 km C) 7 km D) 5 km E) 2 km
Let the total distance be 3x km.   Then, x/8 + x/9 + x/10 = 47/60   x/3 = 47/60 =&gt; x = 2.33.   Total distance = 3 * 2.33= 
<gadget id="calculator">3 * 2.33</gadget>
<output>6.99</output>
6.99 km.   Answer:7 km
<result>C</result>
A person travels equal distances with speeds of 8 km/hr, 9 km/hr and 10 km/hr and takes a total time of 47 minutes. The total distance is?