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Hour glass was used in past days to know

Anita, Indu and Geeta can do a piece of work in 18 days, 27

Cloudy days tend to be more windy than sunnydays.

Foggy days

Foggy days

Raghu can complete a work in 12days working 9 hours aday.

A

A

A and B together can do a piece of work in 12 days, which B

The speed of a bus during the second hour of its journey is

Andy’s average driving speed for a 4-hour trip was 45 mil

A can do a piece of work in 40 days; B can do the same in 30

A, B and C can do a piece of work in 24 days, 30 days and 40

A can do a piece of work in 10 days and B can do it in 15 da