A person covered one-fourth of the total distance at 26 kmph and remaining distance at 24 kmph. What is the average speed for the total distance?	Choose the correct answer
A) 21 (1/36)kmph  B) 21 (1/3)kmph  C) 21 (8/3)kmph  D) 27 (1/3)kmph  E) 25 (1/3)kmph
Let the total distance be x km   total time taken = (x/4)/16 + (3x/4)/24   = x/64 + x/32 = 3x/64   Average speed = x/(3x/64)   = 64/3kmph   = 21 (1/3)kmph.   Answer: 21 (1/3)kmph
<result>B</result>
A person covered one-fourth of the total distance at 26 kmph and remaining distance at 24 kmph. What is the average speed for the total distance?