SOLUTION: A man walks for some distance at 8 km/h, and for an equal distance at 5 km/h .The total time he takes is 3 hours and 15 minutes. Find the distance he had walked.

Question 625066: A man walks for some distance at 8 km/h, and for an equal distance at 5 km/h .The total time he takes is 3 hours and 15 minutes. Find the distance he had walked.
Answer by oscargut(2103) (Show Source): You can put this solution on YOUR website!
Let d = distance walked (total)
Total time = (d/2)/8+ (d/2)/5 = 3.25
d/16 + d/10 = 3.25
(5d+8d)/80=3.25
13d = 260
d = 20
Answer: 20 km
If you have any doubt or if you have more problems my e-mail is:
mthman@gmail.com

RELATED QUESTIONS
a man walks for some distance at 8 km/hr,and for an equal distance at 5 km/hr,the total... (answered by Alan3354)

a man cycled for some time at 16 km/h and returned at 15 km/h . the total time taken was... (answered by ankor@dixie-net.com)

3.a man cycled for some time at 16km/h and returned at 15 km/h. the total time was taken... (answered by robertb)

1.if a piece of wood is 5cm longer than a second piece and 3/4 of the second piece is... (answered by edjones)

1.if a piece of wood is 5cm longer than a second piece and 3/4 of the second piece is... (answered by ewatrrr)

1.if a piece of wood is 5cm longer than a second piece and 3/4 of the second piece is... (answered by mananth)

a man cycles for sometime at 16 km/h and returns at 15 km/h. the total time taken is 31/4 (answered by Alan3354)

A man walks for 12 km at x km/h and then jogs for another 12 km at (x + 2) km/h. He... (answered by alicealc)

A man travels a distance at a speed of 12 km/h and returns at 9 km/h. If the total time... (answered by ikleyn,greenestamps)