## a man walks a certain distance at 8km/hr and return at 6km/hr. if the total time taken by him in 3 1/2 hrs find the total distance walked.

Question

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## Answers ( )

Given:-To find:-Solution:-[when distance is constant.]Average speed = 2ab/(a + b)= 2 x 8 x 6 / 14 = 48/7 kmph

Time walked = 3 ½ hours.

Total Distance covered = 3½ x 48/7 =

24 kms

__________________________________________Alternate Method :

Speed inversely proportional to Time when Distance is constant.

=> If speed ratio = 8:6 then Time Ratio = 6:8 = 3:4

=> Total distance walked = 8 x 3.5×3/7 + 6 x 3.5 x 4/7

= 12 + 12 =

24 kms___________________________________________