Quantitative Aptitude - Arithmetic Ability Questions

The age of Rakhi is twelve times that of her daughter Anubha. If age of Anubha is 3 years now, then what was the age of Rakhi, 2 years earlier?

The average age of 40 students of a class is 16 years. If the average age of 24 students is 15.5 years and that of the 15 students is 16 2⁄3 years, then the age of 40th student is

Two students appeared for an examination. One of them secured 9 marks more than the other and his marks were 56% of the sum of their marks. The marks obtained by them are

Find x, if 5x-6+5x+6 = 6

199994 x 200006 = ?

If 7x ­- 5y = 13 and 2x -­ y = 5, then (x -­ y) is

If ab+ba = -1, then the value of a2b-b2a is

If xy (x + y) = m, then the value of x3 + y3 + 3m is: