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?  Select the correct option:
A) 91 (1/3) kmph	B) 21 (1/3) kilometre per hour	C) 81 (1/3) kmph	D) 21 (1/7) kmph	E) 23 (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) kilometre per hour
<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?