SOLUTION: A man divides his total journey into three equal parts and decides to travel the three parts with speeds 60 km / hr , 24 km / hr and 45 km /hr . Find the average speed during the w

Question 917706: A man divides his total journey into three equal parts and decides to travel the three parts with speeds 60 km / hr , 24 km / hr and 45 km /hr . Find the average speed during the whole journey ?
Found 2 solutions by MathTherapy, josgarithmetic:
Answer by MathTherapy(10555) (Show Source): You can put this solution on YOUR website!

A man divides his total journey into three equal parts and decides to travel the three parts with speeds 60 km / hr , 24 km / hr and 45 km /hr . Find the average speed during the whole journey ?

Average speed:
Average speed: , or km/h
You can do the check!!
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Answer by josgarithmetic(39620) (Show Source): You can put this solution on YOUR website!
Imprecise problem statement.
Is the trip cut into three equal parts by time, or by distance?

Assuming the equal parts are by distance, let d be the distance of each part of the journey.

Total time is

The denominators: 2*2*3*5, 2*2*2*3, 3*3*5
LCD is 2*2*2*3*3*5=360

Time is .

Total distance is .

Question is, what is average speed for the journey.

Decide if this is what you want.

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