Quantitative Aptitude - Arithmetic Ability Questions

The mean of marks secured by 45 students in division A of class X is 69, 65 students of division B is 65 and that of 50 students of division C is 63. Find the mean of marks of the students of three divisions of Class X.

The mean of 14 observations is 11. One more observation is included and the new mean becomes 12. The 15th observation is

Find the least number which must be subtracted from 18265 to make it a perfect square

The ratio of present ages of Ramita and Satyajit is 9:7. After 9 years the ratio of their ages will be 5:4. What is Ramita's present age?

What will be the sum of the measures all the interior angles of a polygon having 14 sides?

If 5x - 4 ≤ 2 - x and 4x + 5 > 2x - 5, then x can take which of the following values?

Find two numbers such that their mean proportion is 8 and third proportion is 64.

The solution set of 4x - 3y = 47 and 3x + y = 32 is