A bus is travelling the first …
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Rajinder Saharan 4 years ago
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Sia ? 4 years ago
It covered =
x/3 at 10
x/3 at 20
x/3 at 60
Times taken respectively are {d/t}
x / 30
x / 60
x / 180 respectively
total time = x/30 + x /60 + x/180
= 10x / 180
= x / 18
Average speed of bus (avg speed)
= total distance / total time
avg speed = x / {x/18}
So, average speed = 18 km / h
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