. A bus travelled the first one-third distance at the
speed of 10 km/hr the next one-third at 20 km/hr
and last one-third at 60 km/hr. The average speed
of bus is
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. A bus travelled the first one-third distance at the
speed of 10 km/hr the next one-third at 20 km/hr
and last one-third at 60 km/hr. The average speed
of bus is
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