Quantitative Aptitude - Arithmetic Ability Questions

The difference between simple interest on a certain sum at the rate of 6% per annum for 5 years and 6 years is 25.8. What is the sum (in Rs)?

Seven years ago, the average age of A, B and C was 51 years. If A is 3 years older than B and B is 3 years older then C then the present ages of A, B and C are ( in year)

To dispose of the old stocks, a person sold a tea-set for Rs. 3420, which was 43% below the cost price. In order to make a profit of 10% the seller should have sold the set for Rs. ___ more.

The value of cos220°+cos270° is

Point Q(-1,b) is the midpoint of segment EF. Co-ordinates of point E are (-4,a) and point F are (2,0). What is the value of a and b?

An object travels 23 m in 3 s and then another 15 m in 2 s. What is the average speed of the object?

9 women can complete a work in 50 days. If more 6 women were added to them, how many days before the work can be completed?

ABCD is a rectangle. P is a point on the side AB as shown in the given figure. If Dp = 13, CP = 10