Question

A man walks from A to B at x m/s and back at y m/s. What is his average speed for the whole journey

Answer 1

average speed = total distance from A to B and back/ time taken to do so

Answer 2

can u give me an equation

Answer 3

Let distance between A to B = D

so total distance = numerator = D
right ?

Answer 4

numerator = 2D **

Answer 5

2D/(d/x+d/y)

Answer 6

speed = distance / time

x = D/time1

time 1 = D/x

time 2 = D/y

Answer 7

so the final answer is 2xy/x+y?

Answer 8

yes :)

Answer 9

I need u to help me with a few more @hartnn ill tag u

Answer 10

ok :)