Question

5. A man goes from his house to his office at 4 km/hr and returns back at 16km/hr. His average speed during the journey is.

Answer 1

Answer:

Please mark it as brainliest.

Answer 2

The average speed is 10 km/hr

Solution:

Given that,

A man goes from his house to his office at 4 km/hr and returns back at 16km/hr

Let "x" be the speed from house to office

Let "y" be the speed from office to house

x = 4

y = 16

The average speed is given as:

$Average\ speed = \frac{x+y}{2}\\\\Average\ speed = \frac{4+16}{2}\\\\Average\ speed = \frac{20}{2}\\\\Average\ speed = 10$

Thus average speed is 10 km/hr

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