Ratio of age of father, mother and son is 9:8:3. Five years hence sum of their age will be 95 years. Find the age of son 5 years ago.

The measure of the angles of a triangle are in the ratio 2 : 7 : 11. Measures of angles are : 

A trader sells two items at the rate of Rs 400 each. If he gains 15% on one and losses 15% on other, then what is the value (in Rs) of loss?

The diagonal of a rectangle is 17 cm long and its perimeter is 46 cm. Find the area of the rectangle.

A, B and C can complete a piece of work in 10, 12, and 15 days respectively, They started the work together. But A left the work before 5 days of its completion. B also left the work 2 days after A left. In how many days was the work completed?

The ratio of the speeds of the two airplanes is 11: 18. If the first airplane covers a distance of 1650 km in 3 hours, then what is the speed (m / s) of the second airplane?

The total marks obtained by Abhishek in Zoology, Botany and Chemistry together is 180 more than the marks obtained by him is botany. What are the average marks obtained by him is zoology and Chemistry together?

The cost price of an article should be increased by what percentage so that after giving 20 percent discount on it, 44 percent profit is obtained?