. A policeman goes to his police station for duty
on cycle with the speed of.15 km per hour and
walks down to his home at 5kms per hour. If the
total time up and down is 40 minutes. How far is
the police station from his home?
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Answer:
Distance=1.25 km
Step-by-step explanation:
I assume home to police station speed=15 km/hr
Let the distance of police station is x km
Time from home to police station
T1=distance /speed=x/15 hr
Time from police station to home
T2=distance /speed=x/5
AS per question
T1+T2=40 min=40/60 =2/3 hr
x/15 +x/5=2/3
Taking LCM =30
2x+6x=10
8x=10
x=10/8=5/4=1.25 km
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