Quantitative Aptitude - Arithmetic Ability Questions

In the given figure, ABCD is a square of side 14 cm. E and F are mid points of sides AB and DC respectively. EPF is a semicircle whose diameter is EF. LMNO is a square . What is the area (in sq.cm) of the shaded region?

What is the difference (in Rs) between compound interest (compounded annually) and simple interest for 3 years on a principal of Rs 3000 at the annual rate of 20%?

What is the value of (3/5 + 7/9)?

If sum of the roots of a quadratic equation is ­-7 and product of the roots is 12. Find the quadratic equation.

R and S started a business by investing Rs 165000 and Rs 195000 respectively for the same period of time. If R’s share in the profit earned by them is Rs 11000, then what is the total profit (in Rs) earned by both of them together?

Six years ago, the ratio of the two persons P and Q was 3 : 2. Four years hence the ratio of their ages will be 8 : 7. What is P's age?

The mean of the data 1, 2, 10, 18, 3, 17, 19 is

A and B together can do a piece of work in 12 days while A alone can do the same work in 30 days. B alone can do it in