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) 64/8kmph	B) 64/3kmph	C) 64/9kmph	D) 64/6kmph	E) 64/4kmph
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: 64/3kmph
<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?