a boy walks from his home to a post office at a distance of 5km in 35

1.	a boy walks from his home to a post office at a distance of 5km in 35 m he return then to his home in 25 min. Find the average speed of the boy in km/hr.
Answer» FIRST we have to change 20 min into seconds,i.e. 20 \times 60 1200 seconds Now we have to change 0.5km in metres,i.e. 0.5 \times 1000 500m also 25 MINUTES into seconds =1500 seconds now, Average speed is Total distance travelled/total time taken so, 500 + 500 \div 1500 + 1200 0.3m/s

a boy walks from his home to a post office at a distance of 5km in 35 m he return then to his home in 25 min. Find the average speed of the boy in km/hr.

Answer»

FIRST we have to change 20 min into seconds,i.e.

20 \times 60

1200 seconds

Now we have to change 0.5km in metres,i.e.

0.5 \times 1000

500m

also 25 MINUTES into seconds =1500 seconds

now, Average speed is

Total distance travelled/total time taken

so,

500 + 500 \div 1500 + 1200

0.3m/s

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a boy walks from his home to a post office at a distance of 5km in 35 m he return then to his home in 25 min. Find the average speed of the boy in km/hr.​

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a boy walks from his home to a post office at a distance of 5km in 35 m he return then to his home in 25 min. Find the average speed of the boy in km/hr.