Quantitative Aptitude - Arithmetic Ability Questions

If cosπ/4c - tanπ/4c = x, then x is

If [2(4x/5 - 3/4)]/3 - 5/3 = -1/6, then the value of x is?

If 3x -­ 7 = 5x ­- 1, then the numerical value of (x ­- 4)2 is 

Reciprocal of 235?

A sum becomes Rs 8800 in 4 years at simple interest at the yearly interest rate of 25% per annum. What is the sum (in Rs)?

A mother is five times older than her daughter. After 5 years, she would be 3 times older than her daughter. Find the mother's present age.

At an average of 80 km/hr Shatabdi Express reaches Ranchi from Kolkata in 7 hrs. Then the distance between Kolkata and Ranchi is

A mixture of 50 kg of cement and gravel contains 10% of gravel. How many kg of gravel must be added to make the gravel content 28% in the new mixture?