Neelaveni goes by no cycle to her school everyday her average speed is12km/hrand she reaches school in 20 minutes what is the increase in speed if she reaches the school in 15 minute
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Actually it is 12 km/hr which is the speed of travelling of Neelavani and time to reach is 20 minutes converting into hours we get 0.33 hrs and calculating the distance of travel =Speed *time
d=12*(20/60)
d=4 km
now new speed is increased and time now is 15 minutes which is 15/60 hrs.
so new speed is s'=4/(15/60)
s'=16 km/hr
increase in speed=16-12
=4 km /hr
Step-by-step explanation:
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