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In what propertion must a grocer mix wheat at 2.04 rupee per kg and 2.88 rupee per kg so as to make a mixture of worth 2.52 rupee per kg ?
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 ??