Quantitative Aptitude - Arithmetic Ability Questions

Present age of Amit is twice of Baman’s present age. After 5 years Baman’s age will be 4 times of the Chetan’s present age. If Chetan celebrated his sixth birthday 7 years ago, then what will be the present age (in years) of Amit?

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

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.

Simplify 486b3x2a4z3/27a3b2z

What is the value of sec2θ + 1sec2θ - 1 x 12cotθ - tanθ ?

The sum of 4x + 3y ­ 7z, x ­ y ­ z and ­2x ­ 3y + 4z is

If 2x - 5y = 5 and 2x - y = 9, then x - y is ______.