Quantitative Aptitude - Arithmetic Ability Questions

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?

What is the difference of the cube and square of the common root of (x2 – 8x + 15) = 0 and (y2 + 2y – 35) = 0?

List price of TV is Rs. 2300 and discount series found to be 25% and 10%. Then the selling price of TV is

What is the value of (sinA -­ 2sin3A)/(2cos3A -­ cosA)?

The value of x for which the expressions 15x + 4 and 13x - 2 become equal is ______

What is the value of (1 + cotA)2 + (1 -­ cotA)2?

For triangle PQR, find equation of altitude PS if co­-ordinates of P, Q and R are (6,2), (0,3) and (­-4,5) respectively?

If x = 4aba+b, then what is the value of x+2ax-2a+x+2bx-2b ?