D and E are two points on the sides AC and BC respectively of triangle ABC such that DE = 18cm ,CE=5 cm and angle DEC = 90. If tan angle=3.6, then AC:CD=
The ratio of expenditure and savings is 3:2. If the income increases by 15% and the saving increases by 6%, then by how much % should his expenditure increases?
The average age of boys in class is 16.66, while the average age of girls is 18.75. Thus the average age of all the 40 students of the class is 17.5. If the difference between the number of boys and girls is 8, then the number of girls in the class is :
The ratio of petrol and kerosene in the container is 3:2 when 10Litres of the mixture is taken out and is replaced by the kerosene, the ratio becomes 2:3. The total quantity of the mixture in the container is :
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