Question

- A bus travelled from village A to village B at a speed of 40 km per hour. On the
return journey its speed was 60 km per hour. What is the average speed of the
bus during the entire journey?
(1) 50 km/h (2) 48 km/h (3) 46 km/h (4) 45 km/h
(Hint: Consider the speeds to be x km/h and y km/h. The required average
2 xy
km/h.)
x+y
​

Answer 1

This is just what i think i am not sure if it is correct or not but here :

To find the average - 40+ 60 / 2

= 100/2

= 50km

So , the answer will be (1) 50 km/hr

Answer 2

$\huge\red{\mid{\underline{\overline{\textbf{answer}}}\mid}}$

Average Speed is 48 Kmph

Option (2) 48km/hr is correct.

$\small\red{\mid{\underline{\overline{\textbf{step \: by \: step \: explanation = }}}\mid}}$

Lets take the distance between the station A & B is 120 Km.

Speed for travelling from station A to B is 40 Kmph so it takes 3 Hrs to reach.

Speed for travelling from station B to A is 60 Kmph so it takes 2 Hrs to return.

Now,

Total distance travelled is 240 Km

Total travelling time is 5 Hrs

Average speed =total Distance travelled / total time taken

= 240/5

= 48 Km/Hr

$\small\red{\mid{\underline{\overline{\textbf{hope \: it \: helps \: a \: lot}}}\mid}}$

$\small\red{\mid{\underline{\overline{\textbf{be \: brainly}}}\mid}}$