A girl walks 12 km at the speed of 3km/h. What change should she make in her speed to take (1) an hour more to cover distance
Answers
Answered by
18
Answer:
2.4km/h
Step-by-step explanation:
speed=3km/h
distance=12km
time taken=distance/speed
=12/3
=4hrs
1 hr more=5hrs
distance=12km
new speed=distance/time
=12/5
=2.4km/h
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Answered by
15
Answer:
she will
to reduce her speed from 3 km/h to 2.4 km/h.
Step-by-step explanation:
Given: distance=12km
speed=3km/h
now, speed = distance/ time
3=12/ t
t=12/3
t=4 h
so, we conclude that she takes 4h to reach the distance.
According to question,
she takes one more hour to reach the distance.
Therefore, new time will be 5 h.
so, speed = distance /time
speed= 12/5
speed= 2.4 km/h
Therefore, she will reduce her speed from 3km/h to 2.4 km/h.
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