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A container contains a mixture of two liquids A and B in the ratio of 7:5 , when 9l of mixture is drawn off and the container is filled with B , the ratio of A and B becomes 7:9. How many litres of liquid A was contained by the container initially??
A car starts running with the initial speed of 40 km/h with its speed increasing every hour by 5 km/h . How many hours will it take to cover a distance of 385 km ?
In how many ways, the letters of the word 'BANKING' can be arranged ?
Find the area of a square inscribed in a circle of radius 4 cm ?
The side of a square is 5 cm which is 13cm less than the diameter of a circle. What is the approx. Area of the circle ??
How many circular plates of diameter d be taken out of square plate of side 2d with minimum loss of material?