Question

A bus goes from the first station to another station with a speed of 54 km per hour. the same bus comes back to the first station with a speed of 36 km per hour. find the average speed of the bus for the entire journey

Answer 1

Answer:

The average speed of the bus average speed is 43.2 km/hr

Explanation:

Given data:

The speed of the non-stop bus from one station = 54 km/h

The bus returns with a speed = 36 km/hr

To find:

Average speed = ?

Solution:

Let us assume that the distance between both the station be x.

In first travel, time taken is given below:

t1 = x/54

In second travel, time taken is given below:

t2 = x/36

Therefore, the total time taken is,

t = t1 + t2 =x/54 + x/36

Total distance travelled be,

 x + x = 2x

Thereby,

Average speed = Total distance/total time

= 2x/x/54 + x/36

= 2x/90x/54 x 36

= 2x x 1944/90x

Average speed = 43.2 km/h

Answer 2

Average Speed =45 km.

Explanation:

To take out average speed first take the sum of all numbers then divide by by the howany numbers ate there

hope this helped you