The length of a rectangular plot is thrice its breadth. If the
area of the rectangular plot is 7803 sq. metre, what is the
breadth of the rectangular plot?

Ratio of Rani’s and Komal’s age is 3 : 5 respectively. Ratio of
Komal’s and Pooja’s age is 2 : 3 respectively. If Rani is twofifth of Pooja’s age, what is Rani’s age?

In a mixture of milk and water the proportion of water by
weight was 75% if in the 60 gms mixture 15 gms water was
added, what would be the percentage of water in the new
mixture?

The average weight of a group of 53 girls was calculated as
58 kgs. It was later discovered that the weight of one of the
girls was read as 65 kgs., whereas her actual weight was 45
kgs. What is the actual average weight of the group of 53
girls ? (rounded off to two digits after decimal)

An aeroplane flies along the four sides of a square at a
speed of 100, 200, 300 and 400 km/h, respectively. What
is the average speed of the plane in its flight around the
square?