Question

A man covers half of his journey at 6 km/hr and the remaining half at 3 km/hr. His average speed is:​

Answer 1

Answer:

Let the total distance be 2x km

Time taken =X/6 + X/3 =3X/6=X/2hrs.

Therefore,

Average speed=TOTAL DISTANNCE

                           ------------------------------- =2X/X/2  

                                 Time     Taken  

Answer 2

Let the Total distance be x

The half distance is covered with 6kmph so the time taken is=x/2/6 = 12x

• The half distance is covered with 3kmph so the time taken is x/2/3=x/6

Avg speed = Totaltime/Totaldistance

x

= ___

x/6x+x/12x

72x

_____

12x +6x

= 72

___= 4

18

answer:4