A trained covered x km at 65 kmph and another 2x km at 20 kmph. Find the average speed of the train in covering the entire 3x km. Choose one:  A) 22  B) 99  C) 26  D) 66  E) 887
Total time taken = x/65 + 2x/20 hours   = 3x/26 hours   Average speed = 3x/(3x/26) = 26 kmph   Answer: 263 /(3 /26)= 
<gadget id="calculator">3 /(3 /26)</gadget>
<output>26</output>
26 kmph   Answer: 26
<result>C</result>
A trained covered x km at 65 kmph and another 2x km at 20 kmph. Find the average speed of the train in covering the entire 3x km.