Quantitative Aptitude - Arithmetic Ability Questions

Two students appeared for an examination. One of them secured 13 marks more than the other and his marks were 76% of the sum of their marks. The marks obtained by them are

If 7x - [3(2x - 3)]/2 = 1/2, then what is the value of x?

If cosπ/4c - tanπ/4c = x, then x is

What least number must be subtracted from 518, so that the sum is completely divisible by 13?

What is the equation of the line whose y-intercept is -3 and makes an angle of 45° with the positive x-axis?

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.

Which of the following quadratic equations has real roots?

Present ages of Rahul and his brother are in the ratio of 5 : 3. After 4 years ratio of ages of Rahul’s brother and his sister will be 5 : 6. If the present age of his sister is 26 years, then what will be the age (in years) of Rahul 3 years from now?