Perimeter of a triangular field is 540 meter. The ratio of its arms is 5 : 12 : 13. The area of this field is

If the ratio of the outer and inner perimeters of a circular path is 23 : 22 and the path is 5 m wide, then the diameter of the inner circle will be

3 years ago, the ratio of Ramesh's and Suresh's age was 5 : 9. After 5 years this ratio would be 3 : 5. The present age of Suresh is :

P and Q are in the ratio 5 : 6 and difference of their squares is 99. The value of P is

The sum of three numbers is 98. If the ratio of the first to second is 2 :3 and that of the second to the third is 5 : 8, then the second number is:

In a mixture 60 litres, the ratio of milk and water 2 : 1. If this ratio is to be 1 : 2, then the quantity of water to be further added is: